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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="A generic trait for converting a value to a number."><meta name="keywords" content="rust, rustlang, rust-lang, ToPrimitive"><title>ToPrimitive in num::traits::cast - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin 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class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../../../num/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../../num/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">ToPrimitive</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.to_i64">to_i64</a></li><li><a href="#tymethod.to_u64">to_u64</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.to_f32">to_f32</a></li><li><a href="#method.to_f64">to_f64</a></li><li><a href="#method.to_i128">to_i128</a></li><li><a href="#method.to_i16">to_i16</a></li><li><a href="#method.to_i32">to_i32</a></li><li><a href="#method.to_i8">to_i8</a></li><li><a href="#method.to_isize">to_isize</a></li><li><a href="#method.to_u128">to_u128</a></li><li><a href="#method.to_u16">to_u16</a></li><li><a href="#method.to_u32">to_u32</a></li><li><a href="#method.to_u8">to_u8</a></li><li><a href="#method.to_usize">to_usize</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-ToPrimitive-for-Wrapping%3CT%3E">Wrapping&lt;T&gt;</a></li><li><a href="#impl-ToPrimitive-for-f32">f32</a></li><li><a href="#impl-ToPrimitive-for-f64">f64</a></li><li><a href="#impl-ToPrimitive-for-i128">i128</a></li><li><a href="#impl-ToPrimitive-for-i16">i16</a></li><li><a href="#impl-ToPrimitive-for-i32">i32</a></li><li><a href="#impl-ToPrimitive-for-i64">i64</a></li><li><a href="#impl-ToPrimitive-for-i8">i8</a></li><li><a href="#impl-ToPrimitive-for-isize">isize</a></li><li><a href="#impl-ToPrimitive-for-u128">u128</a></li><li><a href="#impl-ToPrimitive-for-u16">u16</a></li><li><a href="#impl-ToPrimitive-for-u32">u32</a></li><li><a href="#impl-ToPrimitive-for-u64">u64</a></li><li><a href="#impl-ToPrimitive-for-u8">u8</a></li><li><a href="#impl-ToPrimitive-for-usize">usize</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In num::traits::cast</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Trait <a href="../../index.html">num</a>::<wbr><a href="../index.html">traits</a>::<wbr><a href="index.html">cast</a>::<wbr><a class="trait" href="#">ToPrimitive</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../../src/num_traits/cast.rs.html#19">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="item-decl"><pre class="rust trait"><code>pub trait ToPrimitive {
<details class="rustdoc-toggle type-contents-toggle"><summary class="hideme"><span>Show 14 methods</span></summary> fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;;
<span class="item-spacer"></span> fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;;
fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt; { ... }
</details>}</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A generic trait for converting a value to a number.</p>
<p>A value can be represented by the target type when it lies within
the range of scalars supported by the target type.
For example, a negative integer cannot be represented by an unsigned
integer type, and an <code>i64</code> with a very high magnitude might not be
convertible to an <code>i32</code>.
On the other hand, conversions with possible precision loss or truncation
are admitted, like an <code>f32</code> with a decimal part to an integer type, or
even a large <code>f64</code> saturating to <code>f32</code> infinity.</p>
</div></details><h2 id="required-methods" class="small-section-header">Required Methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle method-toggle" open><summary><section id="tymethod.to_i64" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#50">source</a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>i64</code>. If the value cannot be
represented by an <code>i64</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="tymethod.to_u64" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#96">source</a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>u64</code>. If the value cannot be
represented by a <code>u64</code>, then <code>None</code> is returned.</p>
</div></details></div><h2 id="provided-methods" class="small-section-header">Provided Methods<a href="#provided-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_isize" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#23">source</a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>isize</code>. If the value cannot be
represented by an <code>isize</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_i8" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#30">source</a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>i8</code>. If the value cannot be
represented by an <code>i8</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_i16" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#37">source</a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>i16</code>. If the value cannot be
represented by an <code>i16</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_i32" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#44">source</a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>i32</code>. If the value cannot be
represented by an <code>i32</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_i128" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#62">source</a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>i128</code>. If the value cannot be
represented by an <code>i128</code> (<code>i64</code> under the default implementation), then
<code>None</code> is returned.</p>
<p>This method is only available with feature <code>i128</code> enabled on Rust &gt;= 1.26.</p>
<p>The default implementation converts through <code>to_i64()</code>. Types implementing
this trait should override this method if they can represent a greater range.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_usize" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#69">source</a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>usize</code>. If the value cannot be
represented by a <code>usize</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_u8" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#76">source</a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>u8</code>. If the value cannot be
represented by a <code>u8</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_u16" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#83">source</a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>u16</code>. If the value cannot be
represented by a <code>u16</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_u32" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#90">source</a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>u32</code>. If the value cannot be
represented by a <code>u32</code>, then <code>None</code> is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_u128" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#108">source</a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>u128</code>. If the value cannot be
represented by a <code>u128</code> (<code>u64</code> under the default implementation), then
<code>None</code> is returned.</p>
<p>This method is only available with feature <code>i128</code> enabled on Rust &gt;= 1.26.</p>
<p>The default implementation converts through <code>to_u64()</code>. Types implementing
this trait should override this method if they can represent a greater range.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_f32" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#116">source</a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>f32</code>. Overflows may map to positive
or negative inifinity, otherwise <code>None</code> is returned if the value cannot
be represented by an <code>f32</code>.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_f64" class="method has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#128">source</a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to an <code>f64</code>. Overflows may map to positive
or negative inifinity, otherwise <code>None</code> is returned if the value cannot
be represented by an <code>f64</code>.</p>
<p>The default implementation tries to convert through <code>to_i64()</code>, and
failing that through <code>to_u64()</code>. Types implementing this trait should
override this method if they can represent a greater range.</p>
</div></details></div><h2 id="foreign-impls" class="small-section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor"></a></h2><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-f64" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#impl-ToPrimitive-for-f64" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_isize-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_i8-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_i16-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_i32-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_i64" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_i128-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_usize-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_u8-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_u16-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_u32-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_u64" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_u128-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_f32-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#399">source</a><a href="#method.to_f64-1" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-i16" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#impl-ToPrimitive-for-i16" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_isize-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_i8-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_i16-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_i32-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_i64-1" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_i128-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_usize-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_u8-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_u16-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_u32-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_u64-1" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_u128-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_f32-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#204">source</a><a href="#method.to_f64-2" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-i64" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#impl-ToPrimitive-for-i64" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_isize-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_i8-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_i16-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_i32-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_i64-2" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_i128-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_usize-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_u8-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_u16-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_u32-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_u64-2" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_u128-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_f32-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#206">source</a><a href="#method.to_f64-3" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-i8" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#impl-ToPrimitive-for-i8" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_isize-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_i8-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_i16-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_i32-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_i64-3" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_i128-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_usize-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_u8-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_u16-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_u32-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_u64-3" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_u128-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_f32-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#203">source</a><a href="#method.to_f64-4" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-u8" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#impl-ToPrimitive-for-u8" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_isize-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_i8-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_i16-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_i32-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_i64-4" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_i128-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_usize-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_u8-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_u16-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_u32-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_u64-4" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_u128-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_f32-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#276">source</a><a href="#method.to_f64-5" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-isize" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#impl-ToPrimitive-for-isize" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_isize-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_i8-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_i16-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_i32-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_i64-5" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_i128-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_usize-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_u8-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_u16-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_u32-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_u64-5" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_u128-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_f32-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#202">source</a><a href="#method.to_f64-6" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-usize" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#impl-ToPrimitive-for-usize" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_isize-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_i8-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_i16-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_i32-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_i64-6" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_i128-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_usize-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_u8-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_u16-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_u32-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_u64-6" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_u128-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_f32-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#275">source</a><a href="#method.to_f64-7" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-f32" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#impl-ToPrimitive-for-f32" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_isize-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_i8-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_i16-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_i32-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_i64-7" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_i128-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_usize-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_u8-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_u16-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_u32-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_u64-7" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_u128-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_f32-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#398">source</a><a href="#method.to_f64-8" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-Wrapping%3CT%3E" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#619">source</a><a href="#impl-ToPrimitive-for-Wrapping%3CT%3E" class="anchor"></a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/wrapping/struct.Wrapping.html" title="struct core::num::wrapping::Wrapping">Wrapping</a>&lt;T&gt;<span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a>,</span></h3></section></summary><div class="impl-items"><section id="method.to_isize-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_isize-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_i8-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_i16-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_i32-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_i64-8" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_i128-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_usize-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_u8-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_u16-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_u32-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_u64-8" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_u128-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_f32-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#620-639">source</a><a href="#method.to_f64-9" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-i128" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#impl-ToPrimitive-for-i128" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_isize-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_i8-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_i16-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_i32-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_i64-9" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_i128-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_usize-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_u8-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_u16-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_u32-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_u64-9" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_u128-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_f32-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#208">source</a><a href="#method.to_f64-10" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-i32" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#impl-ToPrimitive-for-i32" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_isize-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_i8-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_i16-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_i32-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_i64-10" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_i128-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_usize-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_u8-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_u16-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_u32-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_u64-10" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_u128-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_f32-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#205">source</a><a href="#method.to_f64-11" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-u64" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#impl-ToPrimitive-for-u64" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_isize-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_i8-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_i16-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_i32-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_i64-11" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_i128-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_usize-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_u8-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_u16-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_u32-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_u64-11" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_u128-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_f32-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#279">source</a><a href="#method.to_f64-12" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-u16" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#impl-ToPrimitive-for-u16" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_isize-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_i8-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_i16-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_i32-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_i64-12" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_i128-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_usize-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_u8-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_u16-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_u32-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_u64-12" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_u128-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_f32-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#277">source</a><a href="#method.to_f64-13" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-u128" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#impl-ToPrimitive-for-u128" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_isize-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_i8-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_i16-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_i32-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_i64-13" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_i128-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_usize-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_u8-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_u16-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_u32-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_u64-13" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_u128-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_f32-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#281">source</a><a href="#method.to_f64-14" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToPrimitive-for-u32" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#impl-ToPrimitive-for-u32" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></h3></section></summary><div class="impl-items"><section id="method.to_isize-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_isize-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_isize" class="fnname">to_isize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</h4></section><section id="method.to_i8-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_i8-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i8" class="fnname">to_i8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</h4></section><section id="method.to_i16-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_i16-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i16" class="fnname">to_i16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</h4></section><section id="method.to_i32-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_i32-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i32" class="fnname">to_i32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</h4></section><section id="method.to_i64-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_i64-14" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_i64" class="fnname">to_i64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</h4></section><section id="method.to_i128-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_i128-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_i128" class="fnname">to_i128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</h4></section><section id="method.to_usize-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_usize-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_usize" class="fnname">to_usize</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</h4></section><section id="method.to_u8-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_u8-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u8" class="fnname">to_u8</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</h4></section><section id="method.to_u16-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_u16-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u16" class="fnname">to_u16</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</h4></section><section id="method.to_u32-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_u32-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u32" class="fnname">to_u32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</h4></section><section id="method.to_u64-14" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_u64-14" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_u64" class="fnname">to_u64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</h4></section><section id="method.to_u128-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_u128-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_u128" class="fnname">to_u128</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</h4></section><section id="method.to_f32-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_f32-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f32" class="fnname">to_f32</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</h4></section><section id="method.to_f64-15" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../../src/num_traits/cast.rs.html#278">source</a><a href="#method.to_f64-15" class="anchor"></a><h4 class="code-header">fn <a href="#method.to_f64" class="fnname">to_f64</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</h4></section></div></details><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div id="implementors-list"><section id="impl-ToPrimitive-for-BigInt" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_bigint/bigint/convert.rs.html#44">source</a><a href="#impl-ToPrimitive-for-BigInt" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="struct" href="../../struct.BigInt.html" title="struct num::BigInt">BigInt</a></h3></section><section id="impl-ToPrimitive-for-BigUint" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_bigint/biguint/convert.rs.html#304">source</a><a href="#impl-ToPrimitive-for-BigUint" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="struct" href="../../struct.BigUint.html" title="struct num::BigUint">BigUint</a></h3></section><section id="impl-ToPrimitive-for-Ratio%3CT%3E" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_rational/lib.rs.html#1453">source</a><a href="#impl-ToPrimitive-for-Ratio%3CT%3E" class="anchor"></a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="struct" href="../../rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;T&gt;<span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="../../trait.Integer.html" title="trait num::Integer">Integer</a> + <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> + <a class="trait" href="../../bigint/trait.ToBigInt.html" title="trait num::bigint::ToBigInt">ToBigInt</a>,</span></h3></section><section id="impl-ToPrimitive-for-Complex%3CT%3E" class="impl has-srclink"><a class="srclink rightside" href="../../../src/num_complex/cast.rs.html#18">source</a><a href="#impl-ToPrimitive-for-Complex%3CT%3E" class="anchor"></a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> for <a class="struct" href="../../struct.Complex.html" title="struct num::Complex">Complex</a>&lt;T&gt;<span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../trait.ToPrimitive.html" title="trait num::ToPrimitive">ToPrimitive</a> + <a class="trait" href="../../trait.Num.html" title="trait num::Num">Num</a>,</span></h3></section></div><script src="../../../implementors/num_traits/cast/trait.ToPrimitive.js" data-ignore-extern-crates="num_complex,std,num_bigint,core,num_rational" async></script></section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="num" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>