| <!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="Source of the Rust file `/root/.cargo/git/checkouts/rulinalg-309246e5a94bf5cf/1ed8b93/src/convert.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>convert.rs - source</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 href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../rulinalg/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../rulinalg/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><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="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="doccomment">//! The convert module. |
| //! |
| //! Contains implementations of `std::convert::From` |
| //! for Matrix and Vector types. |
| |
| </span><span class="kw">use </span>std::convert::From; |
| |
| <span class="kw">use </span>libnum::{Zero, ToPrimitive, NumCast}; |
| |
| <span class="kw">use </span>error::{Error, ErrorKind}; |
| |
| <span class="kw">use </span><span class="kw">super</span>::matrix::{DiagOffset, Matrix, MatrixSlice, MatrixSliceMut, BaseMatrix, |
| Row, RowMut, Column, ColumnMut}; |
| <span class="kw">use </span><span class="kw">super</span>::vector::Vector; |
| |
| <span class="kw">impl</span><T> From<Vec<T>> <span class="kw">for </span>Vector<T> { |
| <span class="kw">fn </span>from(vec: Vec<T>) -> <span class="self">Self </span>{ |
| Vector::new(vec) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T> From<<span class="kw-2">&</span><span class="lifetime">'a </span>[T]> <span class="kw">for </span>Vector<T> |
| <span class="kw">where </span>T: Clone |
| { |
| <span class="kw">fn </span>from(slice: <span class="kw-2">&</span><span class="lifetime">'a </span>[T]) -> <span class="self">Self </span>{ |
| Vector::new(slice.to_owned()) |
| } |
| } |
| |
| <span class="kw">impl</span><T> From<Vector<T>> <span class="kw">for </span>Matrix<T> { |
| <span class="kw">fn </span>from(vector: Vector<T>) -> <span class="self">Self </span>{ |
| Matrix::new(vector.size(), <span class="number">1</span>, vector.into_vec()) |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>impl_matrix_from { |
| (<span class="macro-nonterminal">$slice_type</span>:ident) => { |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Copy> From<<span class="macro-nonterminal">$slice_type</span><<span class="lifetime">'a</span>, T>> <span class="kw">for </span>Matrix<T> { |
| <span class="kw">fn </span>from(slice: <span class="macro-nonterminal">$slice_type</span><<span class="lifetime">'a</span>, T>) -> <span class="self">Self </span>{ |
| slice.row_iter().collect::<Matrix<T>>() |
| } |
| } |
| } |
| } |
| |
| <span class="macro">impl_matrix_from!</span>(MatrixSlice); |
| <span class="macro">impl_matrix_from!</span>(MatrixSliceMut); |
| |
| |
| <span class="macro">macro_rules! </span>impl_diag_offset_from { |
| (<span class="macro-nonterminal">$signed_type</span>:ty) => { |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$signed_type</span>> <span class="kw">for </span>DiagOffset { |
| <span class="kw">fn </span>from(int: <span class="macro-nonterminal">$signed_type</span>) -> <span class="self">Self </span>{ |
| <span class="kw">if </span>int.is_zero() { |
| DiagOffset::Main |
| } <span class="kw">else if </span>int.is_positive() { |
| DiagOffset::Above(int <span class="kw">as </span>usize) |
| } <span class="kw">else </span>{ |
| DiagOffset::Below((-int) <span class="kw">as </span>usize) |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="macro">impl_diag_offset_from!</span>(i8); |
| <span class="macro">impl_diag_offset_from!</span>(i16); |
| <span class="macro">impl_diag_offset_from!</span>(i32); |
| <span class="macro">impl_diag_offset_from!</span>(i64); |
| <span class="macro">impl_diag_offset_from!</span>(isize); |
| |
| <span class="kw">impl</span><T: ToPrimitive> Matrix<T> { |
| <span class="doccomment">/// Attempts to convert the matrix into a new matrix of different scalar type. |
| /// |
| /// # Failures |
| /// - One or more of the elements in the matrix cannot be converted into |
| /// the new type. |
| </span><span class="kw">pub fn </span>try_into<U: NumCast>(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><Matrix<U>, Error> { |
| <span class="kw">let </span>(m, n) = (<span class="self">self</span>.rows(), <span class="self">self</span>.cols()); |
| <span class="kw">let </span><span class="kw-2">ref </span>make_error = || { |
| Error::new(ErrorKind::ScalarConversionFailure, |
| <span class="string">"Failed to convert between scalar types."</span>) |
| }; |
| <span class="kw">let </span>converted_data = <span class="self">self</span>.into_vec() |
| .into_iter() |
| .map(|x| U::from(x).ok_or_else(make_error)) |
| .collect::<<span class="prelude-ty">Result</span><Vec<<span class="kw">_</span>>, Error>>(); |
| |
| <span class="prelude-val">Ok</span>(Matrix::<U>::new(m, n, <span class="macro">try!</span>(converted_data))) |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>impl_row_to_vector ( |
| (<span class="macro-nonterminal">$t</span>:ident) => ( |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Clone> From<<span class="macro-nonterminal">$t</span><<span class="lifetime">'a</span>, T>> <span class="kw">for </span>Vector<T> { |
| <span class="kw">fn </span>from(row: <span class="macro-nonterminal">$t</span><<span class="lifetime">'a</span>, T>) -> <span class="self">Self </span>{ |
| Vector::new(row.raw_slice()) |
| } |
| } |
| |
| ); |
| ); |
| <span class="macro">impl_row_to_vector!</span>(Row); |
| <span class="macro">impl_row_to_vector!</span>(RowMut); |
| |
| <span class="macro">macro_rules! </span>impl_column_to_vector ( |
| (<span class="macro-nonterminal">$t</span>:ident) => ( |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Clone> From<<span class="macro-nonterminal">$t</span><<span class="lifetime">'a</span>, T>> <span class="kw">for </span>Vector<T> { |
| <span class="kw">fn </span>from(column: <span class="macro-nonterminal">$t</span><<span class="lifetime">'a</span>, T>) -> <span class="self">Self </span>{ |
| column.iter().cloned().collect::<<span class="self">Self</span>>() |
| } |
| } |
| |
| ); |
| ); |
| <span class="macro">impl_column_to_vector!</span>(Column); |
| <span class="macro">impl_column_to_vector!</span>(ColumnMut); |
| |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use </span>matrix::{DiagOffset, Matrix, MatrixSlice, MatrixSliceMut, |
| BaseMatrix, BaseMatrixMut}; |
| <span class="kw">use </span>vector::Vector; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>inner_product_as_matrix_multiplication() { |
| <span class="kw">let </span>u: Vector<f32> = <span class="macro">vector!</span>[<span class="number">1.</span>, <span class="number">2.</span>, <span class="number">3.</span>]; |
| <span class="kw">let </span>v: Vector<f32> = <span class="macro">vector!</span>[<span class="number">3.</span>, <span class="number">4.</span>, <span class="number">5.</span>]; |
| <span class="kw">let </span>dot_product = u.dot(<span class="kw-2">&</span>v); |
| |
| <span class="kw">let </span>um: Matrix<f32> = u.into(); |
| <span class="kw">let </span>vm: Matrix<f32> = v.into(); |
| <span class="kw">let </span>matrix_product = um.transpose() * vm; |
| |
| <span class="macro">assert_eq!</span>(dot_product, matrix_product.data()[<span class="number">0</span>]); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>matrix_from_slice() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">3</span>, <span class="number">3</span>, <span class="macro">vec!</span>[<span class="number">2.0</span>; <span class="number">9</span>]); |
| |
| { |
| <span class="kw">let </span>b = MatrixSlice::from_matrix(<span class="kw-2">&</span>a, [<span class="number">1</span>, <span class="number">1</span>], <span class="number">2</span>, <span class="number">2</span>); |
| <span class="kw">let </span>c = Matrix::from(b); |
| <span class="macro">assert_eq!</span>(c.rows(), <span class="number">2</span>); |
| <span class="macro">assert_eq!</span>(c.cols(), <span class="number">2</span>); |
| } |
| |
| <span class="kw">let </span>d = MatrixSliceMut::from_matrix(<span class="kw-2">&mut </span>a, [<span class="number">1</span>, <span class="number">1</span>], <span class="number">2</span>, <span class="number">2</span>); |
| <span class="kw">let </span>e = Matrix::from(d); |
| <span class="macro">assert_eq!</span>(e.rows(), <span class="number">2</span>); |
| <span class="macro">assert_eq!</span>(e.cols(), <span class="number">2</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>diag_offset_from_int() { |
| <span class="kw">let </span>a: DiagOffset = <span class="number">3</span>.into(); |
| <span class="macro">assert_eq!</span>(a, DiagOffset::Above(<span class="number">3</span>)); |
| <span class="kw">let </span>a: DiagOffset = (-<span class="number">3</span>).into(); |
| <span class="macro">assert_eq!</span>(a, DiagOffset::Below(<span class="number">3</span>)); |
| <span class="kw">let </span>a: DiagOffset = <span class="number">0</span>.into(); |
| <span class="macro">assert_eq!</span>(a, DiagOffset::Main); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>try_into_empty_matrix() { |
| { |
| <span class="kw">let </span>x: Matrix<f64> = <span class="macro">matrix!</span>[]; |
| <span class="kw">let </span>y: Matrix<f32> = x.try_into().unwrap(); |
| <span class="macro">assert_matrix_eq!</span>(y, <span class="macro">matrix!</span>[]); |
| } |
| |
| { |
| <span class="kw">let </span>x: Matrix<u64> = <span class="macro">matrix!</span>[]; |
| <span class="kw">let </span>y: Matrix<u32> = x.try_into().unwrap(); |
| <span class="macro">assert_matrix_eq!</span>(y, <span class="macro">matrix!</span>[]); |
| } |
| |
| { |
| <span class="kw">let </span>x: Matrix<f64> = <span class="macro">matrix!</span>[]; |
| <span class="kw">let </span>y: Matrix<u64> = x.try_into().unwrap(); |
| <span class="macro">assert_matrix_eq!</span>(y, <span class="macro">matrix!</span>[]); |
| } |
| |
| { |
| <span class="kw">let </span>x: Matrix<u8> = <span class="macro">matrix!</span>[]; |
| <span class="kw">let </span>y: Matrix<u64> = x.try_into().unwrap(); |
| <span class="macro">assert_matrix_eq!</span>(y, <span class="macro">matrix!</span>[]); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>try_into_f64_to_i64() { |
| <span class="kw">let </span>x: Matrix<f64> = <span class="macro">matrix!</span>[ <span class="number">1.0</span>, <span class="number">2.0</span>; |
| -<span class="number">3.0</span>, <span class="number">4.0</span>]; |
| <span class="kw">let </span>y: Matrix<i64> = x.try_into().unwrap(); |
| <span class="kw">let </span>expected = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| -<span class="number">3</span>, <span class="number">4</span>]; |
| <span class="macro">assert_matrix_eq!</span>(y, expected); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>try_into_f64_to_u64() { |
| <span class="kw">let </span>x: Matrix<f64> = <span class="macro">matrix!</span>[ <span class="number">1.0</span>, <span class="number">2.0</span>; |
| <span class="number">3.0</span>, <span class="number">4.0</span>]; |
| <span class="kw">let </span>y: Matrix<u64> = x.try_into().unwrap(); |
| <span class="kw">let </span>expected = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="macro">assert_matrix_eq!</span>(y, expected); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>try_into_i64_to_f64() { |
| { |
| <span class="kw">let </span>x: Matrix<i64> = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| -<span class="number">3</span>, <span class="number">4</span>]; |
| <span class="kw">let </span>y: Matrix<f64> = x.try_into().unwrap(); |
| |
| <span class="kw">let </span>expected = <span class="macro">matrix!</span>[ <span class="number">1.0</span>, <span class="number">2.0</span>; |
| -<span class="number">3.0</span>, <span class="number">4.0</span>]; |
| <span class="macro">assert_matrix_eq!</span>(y, expected); |
| } |
| |
| { |
| <span class="comment">// Recall that f64 cannot exactly represent integers of sufficiently |
| // large absolute value. Yet, Rust will cast and round as necessary, |
| // so we only check that the result is Ok. |
| </span>{ |
| <span class="kw">let </span>x: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, i64::max_value()]; |
| <span class="kw">let </span>y_result = x.try_into::<f64>(); |
| <span class="macro">assert!</span>(y_result.is_ok()); |
| } |
| |
| { |
| <span class="kw">let </span>x: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, i64::min_value()]; |
| <span class="kw">let </span>y_result = x.try_into::<f64>(); |
| <span class="macro">assert!</span>(y_result.is_ok()); |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>try_into_u64_to_f64() { |
| { |
| <span class="kw">let </span>x: Matrix<u64> = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="kw">let </span>y: Matrix<f64> = x.try_into().unwrap(); |
| |
| <span class="kw">let </span>expected = <span class="macro">matrix!</span>[ <span class="number">1.0</span>, <span class="number">2.0</span>; |
| <span class="number">3.0</span>, <span class="number">4.0</span>]; |
| <span class="macro">assert_matrix_eq!</span>(y, expected); |
| } |
| |
| { |
| <span class="comment">// Recall that f64 cannot exactly represent integers of sufficiently |
| // large absolute value. Yet, Rust will cast and round as necessary, |
| // so we only check that the result is Ok. |
| </span>{ |
| <span class="kw">let </span>x: Matrix<u64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, u64::max_value()]; |
| <span class="kw">let </span>y_result = x.try_into::<f64>(); |
| <span class="macro">assert!</span>(y_result.is_ok()); |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>try_into_signed_unsigned() { |
| { |
| <span class="kw">let </span>x: Matrix<u64> = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="kw">let </span>y: Matrix<i64> = x.try_into().unwrap(); |
| |
| <span class="kw">let </span>expected = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="macro">assert_matrix_eq!</span>(y, expected); |
| } |
| |
| { |
| <span class="kw">let </span>x: Matrix<i64> = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="kw">let </span>y: Matrix<u64> = x.try_into().unwrap(); |
| |
| <span class="kw">let </span>expected = <span class="macro">matrix!</span>[ <span class="number">1</span>, <span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="macro">assert_matrix_eq!</span>(y, expected); |
| } |
| |
| { |
| <span class="comment">// Cannot cast negative values into unsigned |
| </span><span class="kw">let </span>x = <span class="macro">matrix!</span>[ <span class="number">1</span>, -<span class="number">2</span>; |
| <span class="number">3</span>, <span class="number">4</span>]; |
| <span class="kw">let </span>y_result = x.try_into::<u64>(); |
| <span class="macro">assert!</span>(y_result.is_err()); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_row_convert() { |
| <span class="kw">let </span>a: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>; |
| <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>; |
| <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]; |
| <span class="kw">let </span>row = a.row(<span class="number">1</span>); |
| <span class="kw">let </span>v: Vector<i64> = row.into(); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>]); |
| |
| <span class="kw">let </span>row = a.row(<span class="number">2</span>); |
| <span class="kw">let </span>v = Vector::from(row); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_row_convert_mut() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>; |
| <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>; |
| <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]; |
| |
| <span class="kw">let </span>row = a.row_mut(<span class="number">1</span>); |
| <span class="kw">let </span>v: Vector<i64> = row.into(); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>]); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>a: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>; |
| <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>; |
| <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]; |
| <span class="kw">let </span>row = a.row_mut(<span class="number">2</span>); |
| <span class="kw">let </span>v = Vector::from(row); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_column_convert() { |
| <span class="kw">let </span>a: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>; |
| <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>; |
| <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]; |
| <span class="kw">let </span>row = a.col(<span class="number">1</span>); |
| <span class="kw">let </span>v: Vector<i64> = row.into(); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">2</span>, <span class="number">6</span>, <span class="number">10</span>]); |
| |
| <span class="kw">let </span>row = a.col(<span class="number">2</span>); |
| <span class="kw">let </span>v = Vector::from(row); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">3</span>, <span class="number">7</span>, <span class="number">11</span>]); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_column_convert_mut() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>; |
| <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>; |
| <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]; |
| |
| <span class="kw">let </span>row = a.col_mut(<span class="number">1</span>); |
| <span class="kw">let </span>v: Vector<i64> = row.into(); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">2</span>, <span class="number">6</span>, <span class="number">10</span>]); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>a: Matrix<i64> = <span class="macro">matrix!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>; |
| <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>; |
| <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>]; |
| <span class="kw">let </span>row = a.col_mut(<span class="number">2</span>); |
| <span class="kw">let </span>v = Vector::from(row); |
| <span class="macro">assert_eq!</span>(v, <span class="macro">vector!</span>[<span class="number">3</span>, <span class="number">7</span>, <span class="number">11</span>]); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="rulinalg" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |