| <!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="ISO 8601 time without timezone. Allows for the nanosecond precision and optional leap second representation."><meta name="keywords" content="rust, rustlang, rust-lang, NaiveTime"><title>NaiveTime in chrono::naive - 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 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" 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href="../../chrono/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">NaiveTime</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Associated Constants</a></h3><ul class="block"><li><a href="#associatedconstant.MIN">MIN</a></li></ul><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.format">format</a></li><li><a href="#method.format_with_items">format_with_items</a></li><li><a href="#method.from_hms">from_hms</a></li><li><a href="#method.from_hms_micro">from_hms_micro</a></li><li><a href="#method.from_hms_micro_opt">from_hms_micro_opt</a></li><li><a href="#method.from_hms_milli">from_hms_milli</a></li><li><a href="#method.from_hms_milli_opt">from_hms_milli_opt</a></li><li><a href="#method.from_hms_nano">from_hms_nano</a></li><li><a href="#method.from_hms_nano_opt">from_hms_nano_opt</a></li><li><a href="#method.from_hms_opt">from_hms_opt</a></li><li><a href="#method.from_num_seconds_from_midnight">from_num_seconds_from_midnight</a></li><li><a href="#method.from_num_seconds_from_midnight_opt">from_num_seconds_from_midnight_opt</a></li><li><a href="#method.overflowing_add_signed">overflowing_add_signed</a></li><li><a href="#method.overflowing_sub_signed">overflowing_sub_signed</a></li><li><a href="#method.parse_and_remainder">parse_and_remainder</a></li><li><a href="#method.parse_from_str">parse_from_str</a></li><li><a href="#method.signed_duration_since">signed_duration_since</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Add%3CDuration%3E-for-NaiveTime">Add<Duration></a></li><li><a href="#impl-Add%3CFixedOffset%3E-for-NaiveTime">Add<FixedOffset></a></li><li><a href="#impl-AddAssign%3CDuration%3E-for-NaiveTime">AddAssign<Duration></a></li><li><a href="#impl-Clone-for-NaiveTime">Clone</a></li><li><a href="#impl-Copy-for-NaiveTime">Copy</a></li><li><a href="#impl-Debug-for-NaiveTime">Debug</a></li><li><a href="#impl-Default-for-NaiveTime">Default</a></li><li><a href="#impl-Display-for-NaiveTime">Display</a></li><li><a href="#impl-Eq-for-NaiveTime">Eq</a></li><li><a href="#impl-FromStr-for-NaiveTime">FromStr</a></li><li><a href="#impl-Hash-for-NaiveTime">Hash</a></li><li><a href="#impl-Ord-for-NaiveTime">Ord</a></li><li><a href="#impl-PartialEq%3CNaiveTime%3E-for-NaiveTime">PartialEq<NaiveTime></a></li><li><a href="#impl-PartialOrd%3CNaiveTime%3E-for-NaiveTime">PartialOrd<NaiveTime></a></li><li><a href="#impl-StructuralEq-for-NaiveTime">StructuralEq</a></li><li><a href="#impl-StructuralPartialEq-for-NaiveTime">StructuralPartialEq</a></li><li><a href="#impl-Sub%3CDuration%3E-for-NaiveTime">Sub<Duration></a></li><li><a href="#impl-Sub%3CFixedOffset%3E-for-NaiveTime">Sub<FixedOffset></a></li><li><a href="#impl-Sub%3CNaiveTime%3E-for-NaiveTime">Sub<NaiveTime></a></li><li><a href="#impl-SubAssign%3CDuration%3E-for-NaiveTime">SubAssign<Duration></a></li><li><a href="#impl-Timelike-for-NaiveTime">Timelike</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-NaiveTime">RefUnwindSafe</a></li><li><a href="#impl-Send-for-NaiveTime">Send</a></li><li><a href="#impl-Sync-for-NaiveTime">Sync</a></li><li><a href="#impl-Unpin-for-NaiveTime">Unpin</a></li><li><a href="#impl-UnwindSafe-for-NaiveTime">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-NaiveTime">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-NaiveTime">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-NaiveTime">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-NaiveTime">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-NaiveTime">Into<U></a></li><li><a href="#impl-ToOwned-for-NaiveTime">ToOwned</a></li><li><a href="#impl-ToString-for-NaiveTime">ToString</a></li><li><a href="#impl-TryFrom%3CU%3E-for-NaiveTime">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-NaiveTime">TryInto<U></a></li></ul></section><h2><a href="index.html">In chrono::naive</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">Struct <a href="../index.html">chrono</a>::<wbr><a href="index.html">naive</a>::<wbr><a class="struct" href="#">NaiveTime</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/chrono/naive/time/mod.rs.html#193-196">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct NaiveTime { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>ISO 8601 time without timezone. |
| Allows for the nanosecond precision and optional leap second representation.</p> |
| <h2 id="leap-second-handling"><a href="#leap-second-handling">Leap Second Handling</a></h2> |
| <p>Since 1960s, the manmade atomic clock has been so accurate that |
| it is much more accurate than Earth’s own motion. |
| It became desirable to define the civil time in terms of the atomic clock, |
| but that risks the desynchronization of the civil time from Earth. |
| To account for this, the designers of the Coordinated Universal Time (UTC) |
| made that the UTC should be kept within 0.9 seconds of the observed Earth-bound time. |
| When the mean solar day is longer than the ideal (86,400 seconds), |
| the error slowly accumulates and it is necessary to add a <strong>leap second</strong> |
| to slow the UTC down a bit. |
| (We may also remove a second to speed the UTC up a bit, but it never happened.) |
| The leap second, if any, follows 23:59:59 of June 30 or December 31 in the UTC.</p> |
| <p>Fast forward to the 21st century, |
| we have seen 26 leap seconds from January 1972 to December 2015. |
| Yes, 26 seconds. Probably you can read this paragraph within 26 seconds. |
| But those 26 seconds, and possibly more in the future, are never predictable, |
| and whether to add a leap second or not is known only before 6 months. |
| Internet-based clocks (via NTP) do account for known leap seconds, |
| but the system API normally doesn’t (and often can’t, with no network connection) |
| and there is no reliable way to retrieve leap second information.</p> |
| <p>Chrono does not try to accurately implement leap seconds; it is impossible. |
| Rather, <strong>it allows for leap seconds but behaves as if there are <em>no other</em> leap seconds.</strong> |
| Various operations will ignore any possible leap second(s) |
| except when any of the operands were actually leap seconds.</p> |
| <p>If you cannot tolerate this behavior, |
| you must use a separate <code>TimeZone</code> for the International Atomic Time (TAI). |
| TAI is like UTC but has no leap seconds, and thus slightly differs from UTC. |
| Chrono does not yet provide such implementation, but it is planned.</p> |
| <h3 id="representing-leap-seconds"><a href="#representing-leap-seconds">Representing Leap Seconds</a></h3> |
| <p>The leap second is indicated via fractional seconds more than 1 second. |
| This makes possible to treat a leap second as the prior non-leap second |
| if you don’t care about sub-second accuracy. |
| You should use the proper formatting to get the raw leap second.</p> |
| <p>All methods accepting fractional seconds will accept such values.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveDate, NaiveTime, Utc}; |
| |
| <span class="kw">let </span>t = NaiveTime::from_hms_milli_opt(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap(); |
| |
| <span class="kw">let </span>dt1 = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).unwrap().and_hms_micro_opt(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000_000</span>).unwrap(); |
| |
| <span class="kw">let </span>dt2 = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).unwrap().and_hms_nano_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000_000_000</span>).unwrap().and_local_timezone(Utc).unwrap();</code></pre></div> |
| <p>Note that the leap second can happen anytime given an appropriate time zone; |
| 2015-07-01 01:23:60 would be a proper leap second if UTC+01:24 had existed. |
| Practically speaking, though, by the time of the first leap second on 1972-06-30, |
| every time zone offset around the world has standardized to the 5-minute alignment.</p> |
| <h3 id="date-and-time-arithmetics"><a href="#date-and-time-arithmetics">Date And Time Arithmetics</a></h3> |
| <p>As a concrete example, let’s assume that <code>03:00:60</code> and <code>04:00:60</code> are leap seconds. |
| In reality, of course, leap seconds are separated by at least 6 months. |
| We will also use some intuitive concise notations for the explanation.</p> |
| <p><code>Time + Duration</code> |
| (short for <a href="#method.overflowing_add_signed"><code>NaiveTime::overflowing_add_signed</code></a>):</p> |
| <ul> |
| <li><code>03:00:00 + 1s = 03:00:01</code>.</li> |
| <li><code>03:00:59 + 60s = 03:02:00</code>.</li> |
| <li><code>03:00:59 + 1s = 03:01:00</code>.</li> |
| <li><code>03:00:60 + 1s = 03:01:00</code>. |
| Note that the sum is identical to the previous.</li> |
| <li><code>03:00:60 + 60s = 03:01:59</code>.</li> |
| <li><code>03:00:60 + 61s = 03:02:00</code>.</li> |
| <li><code>03:00:60.1 + 0.8s = 03:00:60.9</code>.</li> |
| </ul> |
| <p><code>Time - Duration</code> |
| (short for <a href="#method.overflowing_sub_signed"><code>NaiveTime::overflowing_sub_signed</code></a>):</p> |
| <ul> |
| <li><code>03:00:00 - 1s = 02:59:59</code>.</li> |
| <li><code>03:01:00 - 1s = 03:00:59</code>.</li> |
| <li><code>03:01:00 - 60s = 03:00:00</code>.</li> |
| <li><code>03:00:60 - 60s = 03:00:00</code>. |
| Note that the result is identical to the previous.</li> |
| <li><code>03:00:60.7 - 0.4s = 03:00:60.3</code>.</li> |
| <li><code>03:00:60.7 - 0.9s = 03:00:59.8</code>.</li> |
| </ul> |
| <p><code>Time - Time</code> |
| (short for <a href="#method.signed_duration_since"><code>NaiveTime::signed_duration_since</code></a>):</p> |
| <ul> |
| <li><code>04:00:00 - 03:00:00 = 3600s</code>.</li> |
| <li><code>03:01:00 - 03:00:00 = 60s</code>.</li> |
| <li><code>03:00:60 - 03:00:00 = 60s</code>. |
| Note that the difference is identical to the previous.</li> |
| <li><code>03:00:60.6 - 03:00:59.4 = 1.2s</code>.</li> |
| <li><code>03:01:00 - 03:00:59.8 = 0.2s</code>.</li> |
| <li><code>03:01:00 - 03:00:60.5 = 0.5s</code>. |
| Note that the difference is larger than the previous, |
| even though the leap second clearly follows the previous whole second.</li> |
| <li><code>04:00:60.9 - 03:00:60.1 = (04:00:60.9 - 04:00:00) + (04:00:00 - 03:01:00) + (03:01:00 - 03:00:60.1) = 60.9s + 3540s + 0.9s = 3601.8s</code>.</li> |
| </ul> |
| <p>In general,</p> |
| <ul> |
| <li> |
| <p><code>Time + Duration</code> unconditionally equals to <code>Duration + Time</code>.</p> |
| </li> |
| <li> |
| <p><code>Time - Duration</code> unconditionally equals to <code>Time + (-Duration)</code>.</p> |
| </li> |
| <li> |
| <p><code>Time1 - Time2</code> unconditionally equals to <code>-(Time2 - Time1)</code>.</p> |
| </li> |
| <li> |
| <p>Associativity does not generally hold, because |
| <code>(Time + Duration1) - Duration2</code> no longer equals to <code>Time + (Duration1 - Duration2)</code> |
| for two positive durations.</p> |
| <ul> |
| <li> |
| <p>As a special case, <code>(Time + Duration) - Duration</code> also does not equal to <code>Time</code>.</p> |
| </li> |
| <li> |
| <p>If you can assume that all durations have the same sign, however, |
| then the associativity holds: |
| <code>(Time + Duration1) + Duration2</code> equals to <code>Time + (Duration1 + Duration2)</code> |
| for two positive durations.</p> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <h3 id="reading-and-writing-leap-seconds"><a href="#reading-and-writing-leap-seconds">Reading And Writing Leap Seconds</a></h3> |
| <p>The “typical” leap seconds on the minute boundary are |
| correctly handled both in the formatting and parsing. |
| The leap second in the human-readable representation |
| will be represented as the second part being 60, as required by ISO 8601.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Utc, NaiveDate}; |
| |
| <span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).unwrap().and_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap().and_local_timezone(Utc).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, dt), <span class="string">"2015-06-30T23:59:60Z"</span>);</code></pre></div> |
| <p>There are hypothetical leap seconds not on the minute boundary |
| nevertheless supported by Chrono. |
| They are allowed for the sake of completeness and consistency; |
| there were several “exotic” time zone offsets with fractional minutes prior to UTC after all. |
| For such cases the human-readable representation is ambiguous |
| and would be read back to the next non-leap second.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{DateTime, Utc, TimeZone, NaiveDate}; |
| |
| <span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).unwrap().and_hms_milli_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">1_000</span>).unwrap().and_local_timezone(Utc).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, dt), <span class="string">"2015-06-30T23:56:05Z"</span>); |
| |
| <span class="kw">let </span>dt = Utc.with_ymd_and_hms(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">56</span>, <span class="number">5</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, dt), <span class="string">"2015-06-30T23:56:05Z"</span>); |
| <span class="macro">assert_eq!</span>(DateTime::parse_from_rfc3339(<span class="string">"2015-06-30T23:56:05Z"</span>).unwrap(), dt);</code></pre></div> |
| <p>Since Chrono alone cannot determine any existence of leap seconds, |
| <strong>there is absolutely no guarantee that the leap second read has actually happened</strong>.</p> |
| </div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#209-798">source</a><a href="#impl-NaiveTime" class="anchor"></a><h3 class="code-header">impl <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#219-221">source</a><h4 class="code-header">pub fn <a href="#method.from_hms" class="fnname">from_hms</a>(hour: u32, min: u32, sec: u32) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.23: use <code>from_hms_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute and second.</p> |
| <p>No <a href="#leap-second-handling">leap second</a> is allowed here; |
| use <code>NaiveTime::from_hms_*</code> methods with a subsecond parameter instead.</p> |
| <p>Panics on invalid hour, minute and/or second.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_opt" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#245-247">source</a><h4 class="code-header">pub const fn <a href="#method.from_hms_opt" class="fnname">from_hms_opt</a>(hour: u32, min: u32, sec: u32) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute and second.</p> |
| <p>No <a href="#leap-second-handling">leap second</a> is allowed here; |
| use <code>NaiveTime::from_hms_*_opt</code> methods with a subsecond parameter instead.</p> |
| <p>Returns <code>None</code> on invalid hour, minute and/or second.</p> |
| <h5 id="example"><a href="#example">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>from_hms_opt = NaiveTime::from_hms_opt; |
| |
| <span class="macro">assert!</span>(from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_some()); |
| <span class="macro">assert!</span>(from_hms_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>).is_some()); |
| <span class="macro">assert!</span>(from_hms_opt(<span class="number">24</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hms_opt(<span class="number">23</span>, <span class="number">60</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hms_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">60</span>).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_milli" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#258-260">source</a><h4 class="code-header">pub fn <a href="#method.from_hms_milli" class="fnname">from_hms_milli</a>(hour: u32, min: u32, sec: u32, milli: u32) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.23: use <code>from_hms_milli_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute, second and millisecond.</p> |
| <p>The millisecond part can exceed 1,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Panics on invalid hour, minute, second and/or millisecond.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_milli_opt" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#286-290">source</a><h4 class="code-header">pub fn <a href="#method.from_hms_milli_opt" class="fnname">from_hms_milli_opt</a>(<br> hour: u32,<br> min: u32,<br> sec: u32,<br> milli: u32<br>) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute, second and millisecond.</p> |
| <p>The millisecond part can exceed 1,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Returns <code>None</code> on invalid hour, minute, second and/or millisecond.</p> |
| <h5 id="example-1"><a href="#example-1">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>from_hmsm_opt = NaiveTime::from_hms_milli_opt; |
| |
| <span class="macro">assert!</span>(from_hmsm_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_some()); |
| <span class="macro">assert!</span>(from_hmsm_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">999</span>).is_some()); |
| <span class="macro">assert!</span>(from_hmsm_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_999</span>).is_some()); <span class="comment">// a leap second after 23:59:59 |
| </span><span class="macro">assert!</span>(from_hmsm_opt(<span class="number">24</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsm_opt(<span class="number">23</span>, <span class="number">60</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsm_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">60</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsm_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">2_000</span>).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_micro" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#301-303">source</a><h4 class="code-header">pub fn <a href="#method.from_hms_micro" class="fnname">from_hms_micro</a>(hour: u32, min: u32, sec: u32, micro: u32) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.23: use <code>from_hms_micro_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute, second and microsecond.</p> |
| <p>The microsecond part can exceed 1,000,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Panics on invalid hour, minute, second and/or microsecond.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_micro_opt" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#329-331">source</a><h4 class="code-header">pub fn <a href="#method.from_hms_micro_opt" class="fnname">from_hms_micro_opt</a>(<br> hour: u32,<br> min: u32,<br> sec: u32,<br> micro: u32<br>) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute, second and microsecond.</p> |
| <p>The microsecond part can exceed 1,000,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Returns <code>None</code> on invalid hour, minute, second and/or microsecond.</p> |
| <h5 id="example-2"><a href="#example-2">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>from_hmsu_opt = NaiveTime::from_hms_micro_opt; |
| |
| <span class="macro">assert!</span>(from_hmsu_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_some()); |
| <span class="macro">assert!</span>(from_hmsu_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">999_999</span>).is_some()); |
| <span class="macro">assert!</span>(from_hmsu_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_999_999</span>).is_some()); <span class="comment">// a leap second after 23:59:59 |
| </span><span class="macro">assert!</span>(from_hmsu_opt(<span class="number">24</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsu_opt(<span class="number">23</span>, <span class="number">60</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsu_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">60</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsu_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">2_000_000</span>).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_nano" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#342-344">source</a><h4 class="code-header">pub fn <a href="#method.from_hms_nano" class="fnname">from_hms_nano</a>(hour: u32, min: u32, sec: u32, nano: u32) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.23: use <code>from_hms_nano_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute, second and nanosecond.</p> |
| <p>The nanosecond part can exceed 1,000,000,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Panics on invalid hour, minute, second and/or nanosecond.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_hms_nano_opt" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#370-376">source</a><h4 class="code-header">pub const fn <a href="#method.from_hms_nano_opt" class="fnname">from_hms_nano_opt</a>(<br> hour: u32,<br> min: u32,<br> sec: u32,<br> nano: u32<br>) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from hour, minute, second and nanosecond.</p> |
| <p>The nanosecond part can exceed 1,000,000,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Returns <code>None</code> on invalid hour, minute, second and/or nanosecond.</p> |
| <h5 id="example-3"><a href="#example-3">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>from_hmsn_opt = NaiveTime::from_hms_nano_opt; |
| |
| <span class="macro">assert!</span>(from_hmsn_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_some()); |
| <span class="macro">assert!</span>(from_hmsn_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">999_999_999</span>).is_some()); |
| <span class="macro">assert!</span>(from_hmsn_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_999_999_999</span>).is_some()); <span class="comment">// a leap second after 23:59:59 |
| </span><span class="macro">assert!</span>(from_hmsn_opt(<span class="number">24</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsn_opt(<span class="number">23</span>, <span class="number">60</span>, <span class="number">0</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsn_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">60</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_hmsn_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">2_000_000_000</span>).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_num_seconds_from_midnight" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#387-389">source</a><h4 class="code-header">pub fn <a href="#method.from_num_seconds_from_midnight" class="fnname">from_num_seconds_from_midnight</a>(secs: u32, nano: u32) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.4.23: use <code>from_num_seconds_from_midnight_opt()</code> instead</span></div></span></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from the number of seconds since midnight and nanosecond.</p> |
| <p>The nanosecond part can exceed 1,000,000,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Panics on invalid number of seconds and/or nanosecond.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_num_seconds_from_midnight_opt" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#413-418">source</a><h4 class="code-header">pub const fn <a href="#method.from_num_seconds_from_midnight_opt" class="fnname">from_num_seconds_from_midnight_opt</a>(<br> secs: u32,<br> nano: u32<br>) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> from the number of seconds since midnight and nanosecond.</p> |
| <p>The nanosecond part can exceed 1,000,000,000 |
| in order to represent the <a href="#leap-second-handling">leap second</a>.</p> |
| <p>Returns <code>None</code> on invalid number of seconds and/or nanosecond.</p> |
| <h5 id="example-4"><a href="#example-4">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>from_nsecs_opt = NaiveTime::from_num_seconds_from_midnight_opt; |
| |
| <span class="macro">assert!</span>(from_nsecs_opt(<span class="number">0</span>, <span class="number">0</span>).is_some()); |
| <span class="macro">assert!</span>(from_nsecs_opt(<span class="number">86399</span>, <span class="number">999_999_999</span>).is_some()); |
| <span class="macro">assert!</span>(from_nsecs_opt(<span class="number">86399</span>, <span class="number">1_999_999_999</span>).is_some()); <span class="comment">// a leap second after 23:59:59 |
| </span><span class="macro">assert!</span>(from_nsecs_opt(<span class="number">86_400</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(from_nsecs_opt(<span class="number">86399</span>, <span class="number">2_000_000_000</span>).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.parse_from_str" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#481-485">source</a><h4 class="code-header">pub fn <a href="#method.parse_from_str" class="fnname">parse_from_str</a>(s: &str, fmt: &str) -> <a class="type" href="../format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a><<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Parses a string with the specified format string and returns a new <code>NaiveTime</code>. |
| See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a> |
| on the supported escape sequences.</p> |
| <h5 id="example-5"><a href="#example-5">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>parse_from_str = NaiveTime::parse_from_str; |
| |
| <span class="macro">assert_eq!</span>(parse_from_str(<span class="string">"23:56:04"</span>, <span class="string">"%H:%M:%S"</span>), |
| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(parse_from_str(<span class="string">"pm012345.6789"</span>, <span class="string">"%p%I%M%S%.f"</span>), |
| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_micro_opt(<span class="number">13</span>, <span class="number">23</span>, <span class="number">45</span>, <span class="number">678_900</span>).unwrap()));</code></pre></div> |
| <p>Date and offset is ignored for the purpose of parsing.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(parse_from_str(<span class="string">"2014-5-17T12:34:56+09:30"</span>, <span class="string">"%Y-%m-%dT%H:%M:%S%z"</span>), |
| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_opt(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>).unwrap()));</code></pre></div> |
| <p><a href="#leap-second-handling">Leap seconds</a> are correctly handled by |
| treating any time of the form <code>hh:mm:60</code> as a leap second. |
| (This equally applies to the formatting, so the round trip is possible.)</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(parse_from_str(<span class="string">"08:59:60.123"</span>, <span class="string">"%H:%M:%S%.f"</span>), |
| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_milli_opt(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_123</span>).unwrap()));</code></pre></div> |
| <p>Missing seconds are assumed to be zero, |
| but out-of-bound times or insufficient fields are errors otherwise.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(parse_from_str(<span class="string">"7:15"</span>, <span class="string">"%H:%M"</span>), |
| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_opt(<span class="number">7</span>, <span class="number">15</span>, <span class="number">0</span>).unwrap())); |
| |
| <span class="macro">assert!</span>(parse_from_str(<span class="string">"04m33s"</span>, <span class="string">"%Mm%Ss"</span>).is_err()); |
| <span class="macro">assert!</span>(parse_from_str(<span class="string">"12"</span>, <span class="string">"%H"</span>).is_err()); |
| <span class="macro">assert!</span>(parse_from_str(<span class="string">"17:60"</span>, <span class="string">"%H:%M"</span>).is_err()); |
| <span class="macro">assert!</span>(parse_from_str(<span class="string">"24:00:00"</span>, <span class="string">"%H:%M:%S"</span>).is_err());</code></pre></div> |
| <p>All parsed fields should be consistent to each other, otherwise it’s an error. |
| Here <code>%H</code> is for 24-hour clocks, unlike <code>%I</code>, |
| and thus can be independently determined without AM/PM.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert!</span>(parse_from_str(<span class="string">"13:07 AM"</span>, <span class="string">"%H:%M %p"</span>).is_err());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.parse_and_remainder" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#503-507">source</a><h4 class="code-header">pub fn <a href="#method.parse_and_remainder" class="fnname">parse_and_remainder</a><'a>(<br> s: &'a str,<br> fmt: &str<br>) -> <a class="type" href="../format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a><(<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>, &'a str)></h4></section></summary><div class="docblock"><p>Parses a string from a user-specified format into a new <code>NaiveTime</code> value, and a slice with |
| the remaining portion of the string. |
| See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a> |
| on the supported escape sequences.</p> |
| <p>Similar to <a href="#method.parse_from_str"><code>parse_from_str</code></a>.</p> |
| <h5 id="example-6"><a href="#example-6">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>(time, remainder) = NaiveTime::parse_and_remainder( |
| <span class="string">"3h4m33s trailing text"</span>, <span class="string">"%-Hh%-Mm%-Ss"</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(time, NaiveTime::from_hms_opt(<span class="number">3</span>, <span class="number">4</span>, <span class="number">33</span>).unwrap()); |
| <span class="macro">assert_eq!</span>(remainder, <span class="string">" trailing text"</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.overflowing_add_signed" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#529-590">source</a><h4 class="code-header">pub fn <a href="#method.overflowing_add_signed" class="fnname">overflowing_add_signed</a>(&self, rhs: <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -> (<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>, i64)</h4></section></summary><div class="docblock"><p>Adds given <code>Duration</code> to the current time, |
| and also returns the number of <em>seconds</em> |
| in the integral number of days ignored from the addition. |
| (We cannot return <code>Duration</code> because it is subject to overflow or underflow.)</p> |
| <h5 id="example-7"><a href="#example-7">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Duration, NaiveTime}; |
| |
| <span class="kw">let </span>from_hms = |h, m, s| { NaiveTime::from_hms_opt(h, m, s).unwrap() }; |
| |
| <span class="macro">assert_eq!</span>(from_hms(<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>).overflowing_add_signed(Duration::hours(<span class="number">11</span>)), |
| (from_hms(<span class="number">14</span>, <span class="number">4</span>, <span class="number">5</span>), <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hms(<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>).overflowing_add_signed(Duration::hours(<span class="number">23</span>)), |
| (from_hms(<span class="number">2</span>, <span class="number">4</span>, <span class="number">5</span>), <span class="number">86_400</span>)); |
| <span class="macro">assert_eq!</span>(from_hms(<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>).overflowing_add_signed(Duration::hours(-<span class="number">7</span>)), |
| (from_hms(<span class="number">20</span>, <span class="number">4</span>, <span class="number">5</span>), -<span class="number">86_400</span>));</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.overflowing_sub_signed" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#613-616">source</a><h4 class="code-header">pub fn <a href="#method.overflowing_sub_signed" class="fnname">overflowing_sub_signed</a>(&self, rhs: <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -> (<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>, i64)</h4></section></summary><div class="docblock"><p>Subtracts given <code>Duration</code> from the current time, |
| and also returns the number of <em>seconds</em> |
| in the integral number of days ignored from the subtraction. |
| (We cannot return <code>Duration</code> because it is subject to overflow or underflow.)</p> |
| <h5 id="example-8"><a href="#example-8">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Duration, NaiveTime}; |
| |
| <span class="kw">let </span>from_hms = |h, m, s| { NaiveTime::from_hms_opt(h, m, s).unwrap() }; |
| |
| <span class="macro">assert_eq!</span>(from_hms(<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>).overflowing_sub_signed(Duration::hours(<span class="number">2</span>)), |
| (from_hms(<span class="number">1</span>, <span class="number">4</span>, <span class="number">5</span>), <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hms(<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>).overflowing_sub_signed(Duration::hours(<span class="number">17</span>)), |
| (from_hms(<span class="number">10</span>, <span class="number">4</span>, <span class="number">5</span>), <span class="number">86_400</span>)); |
| <span class="macro">assert_eq!</span>(from_hms(<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>).overflowing_sub_signed(Duration::hours(-<span class="number">22</span>)), |
| (from_hms(<span class="number">1</span>, <span class="number">4</span>, <span class="number">5</span>), -<span class="number">86_400</span>));</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.signed_duration_since" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#673-703">source</a><h4 class="code-header">pub fn <a href="#method.signed_duration_since" class="fnname">signed_duration_since</a>(self, rhs: <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -> <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a></h4></section></summary><div class="docblock"><p>Subtracts another <code>NaiveTime</code> from the current time. |
| Returns a <code>Duration</code> within +/- 1 day. |
| This does not overflow or underflow at all.</p> |
| <p>As a part of Chrono’s <a href="#leap-second-handling">leap second handling</a>, |
| the subtraction assumes that <strong>there is no leap second ever</strong>, |
| except when any of the <code>NaiveTime</code>s themselves represents a leap second |
| in which case the assumption becomes that |
| <strong>there are exactly one (or two) leap second(s) ever</strong>.</p> |
| <h5 id="example-9"><a href="#example-9">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Duration, NaiveTime}; |
| |
| <span class="kw">let </span>from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() }; |
| <span class="kw">let </span>since = NaiveTime::signed_duration_since; |
| |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>)), |
| Duration::zero()); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">875</span>)), |
| Duration::milliseconds(<span class="number">25</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">925</span>)), |
| Duration::milliseconds(<span class="number">975</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">900</span>)), |
| Duration::seconds(<span class="number">7</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">7</span>, <span class="number">900</span>)), |
| Duration::seconds(<span class="number">5 </span>* <span class="number">60</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">0</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>)), |
| Duration::seconds(<span class="number">3 </span>* <span class="number">3600</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">4</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>)), |
| Duration::seconds(-<span class="number">3600</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), from_hmsm(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>, <span class="number">800</span>)), |
| Duration::seconds(<span class="number">3600 </span>+ <span class="number">60 </span>+ <span class="number">1</span>) + Duration::milliseconds(<span class="number">100</span>));</code></pre></div> |
| <p>Leap seconds are handled, but the subtraction assumes that |
| there were no other leap seconds happened.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>), from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">0</span>)), |
| Duration::seconds(<span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_500</span>), from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">0</span>)), |
| Duration::milliseconds(<span class="number">1500</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>), from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)), |
| Duration::seconds(<span class="number">60</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>), from_hmsm(<span class="number">2</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>)), |
| Duration::seconds(<span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(since(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>), from_hmsm(<span class="number">2</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>)), |
| Duration::seconds(<span class="number">61</span>));</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.format_with_items" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#736-742">source</a><h4 class="code-header">pub fn <a href="#method.format_with_items" class="fnname">format_with_items</a><'a, I, B>(&self, items: I) -> <a class="struct" href="../format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a><I><span class="where fmt-newline">where<br> I: Iterator<Item = B> + Clone,<br> B: Borrow<<a class="enum" href="../format/enum.Item.html" title="enum chrono::format::Item">Item</a><'a>>,</span></h4></section></summary><div class="docblock"><p>Formats the time with the specified formatting items. |
| Otherwise it is the same as the ordinary <a href="#method.format"><code>format</code></a> method.</p> |
| <p>The <code>Iterator</code> of items should be <code>Clone</code>able, |
| since the resulting <code>DelayedFormat</code> value may be formatted multiple times.</p> |
| <h5 id="example-10"><a href="#example-10">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| <span class="kw">use </span>chrono::format::strftime::StrftimeItems; |
| |
| <span class="kw">let </span>fmt = StrftimeItems::new(<span class="string">"%H:%M:%S"</span>); |
| <span class="kw">let </span>t = NaiveTime::from_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(t.format_with_items(fmt.clone()).to_string(), <span class="string">"23:56:04"</span>); |
| <span class="macro">assert_eq!</span>(t.format(<span class="string">"%H:%M:%S"</span>).to_string(), <span class="string">"23:56:04"</span>);</code></pre></div> |
| <p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, t.format_with_items(fmt)), <span class="string">"23:56:04"</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.format" class="method has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#782-784">source</a><h4 class="code-header">pub fn <a href="#method.format" class="fnname">format</a><'a>(&self, fmt: &'a str) -> <a class="struct" href="../format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a><<a class="struct" href="../format/strftime/struct.StrftimeItems.html" title="struct chrono::format::strftime::StrftimeItems">StrftimeItems</a><'a>></h4></section></summary><div class="docblock"><p>Formats the time with the specified format string. |
| See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a> |
| on the supported escape sequences.</p> |
| <p>This returns a <code>DelayedFormat</code>, |
| which gets converted to a string only when actual formatting happens. |
| You may use the <code>to_string</code> method to get a <code>String</code>, |
| or just feed it into <code>print!</code> and other formatting macros. |
| (In this way it avoids the redundant memory allocation.)</p> |
| <p>A wrong format string does <em>not</em> issue an error immediately. |
| Rather, converting or formatting the <code>DelayedFormat</code> fails. |
| You are recommended to immediately use <code>DelayedFormat</code> for this reason.</p> |
| <h5 id="example-11"><a href="#example-11">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>t = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(t.format(<span class="string">"%H:%M:%S"</span>).to_string(), <span class="string">"23:56:04"</span>); |
| <span class="macro">assert_eq!</span>(t.format(<span class="string">"%H:%M:%S%.6f"</span>).to_string(), <span class="string">"23:56:04.012345"</span>); |
| <span class="macro">assert_eq!</span>(t.format(<span class="string">"%-I:%M %p"</span>).to_string(), <span class="string">"11:56 PM"</span>);</code></pre></div> |
| <p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, t.format(<span class="string">"%H:%M:%S"</span>)), <span class="string">"23:56:04"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, t.format(<span class="string">"%H:%M:%S%.6f"</span>)), <span class="string">"23:56:04.012345"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, t.format(<span class="string">"%-I:%M %p"</span>)), <span class="string">"11:56 PM"</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle" open><summary><section id="associatedconstant.MIN" class="associatedconstant has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#796">source</a><h4 class="code-header">pub const <a href="#associatedconstant.MIN" class="constant">MIN</a>: Self = _</h4></section></summary><div class="docblock"><p>The earliest possible <code>NaiveTime</code></p> |
| </div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Add%3CDuration%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1061-1068">source</a><a href="#impl-Add%3CDuration%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Add<<a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">Duration</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>An addition of <code>Duration</code> to <code>NaiveTime</code> wraps around and never overflows or underflows. |
| In particular the addition ignores integral number of days.</p> |
| <p>As a part of Chrono’s <a href="struct.NaiveTime.html#leap-second-handling">leap second handling</a>, the addition assumes that <strong>there is no leap |
| second ever</strong>, except when the <code>NaiveTime</code> itself represents a leap second in which case the |
| assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p> |
| <h4 id="example-21"><a href="#example-21">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Duration, NaiveTime}; |
| |
| <span class="kw">let </span>from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() }; |
| |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::zero(), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::seconds(<span class="number">1</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::seconds(-<span class="number">1</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::seconds(<span class="number">60 </span>+ <span class="number">4</span>), from_hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">11</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::seconds(<span class="number">7</span><span class="kw-2">*</span><span class="number">60</span><span class="kw-2">*</span><span class="number">60 </span>- <span class="number">6</span><span class="kw-2">*</span><span class="number">60</span>), from_hmsm(<span class="number">9</span>, <span class="number">59</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::milliseconds(<span class="number">80</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">80</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">950</span>) + Duration::milliseconds(<span class="number">280</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">230</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">950</span>) + Duration::milliseconds(-<span class="number">980</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">970</span>));</code></pre></div> |
| <p>The addition wraps around.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::seconds(<span class="number">22</span><span class="kw-2">*</span><span class="number">60</span><span class="kw-2">*</span><span class="number">60</span>), from_hmsm(<span class="number">1</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::seconds(-<span class="number">8</span><span class="kw-2">*</span><span class="number">60</span><span class="kw-2">*</span><span class="number">60</span>), from_hmsm(<span class="number">19</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) + Duration::days(<span class="number">800</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>));</code></pre></div> |
| <p>Leap seconds are handled, but the addition assumes that it is the only leap second happened.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>); |
| <span class="macro">assert_eq!</span>(leap + Duration::zero(), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)); |
| <span class="macro">assert_eq!</span>(leap + Duration::milliseconds(-<span class="number">500</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)); |
| <span class="macro">assert_eq!</span>(leap + Duration::milliseconds(<span class="number">500</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>)); |
| <span class="macro">assert_eq!</span>(leap + Duration::milliseconds(<span class="number">800</span>), from_hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>)); |
| <span class="macro">assert_eq!</span>(leap + Duration::seconds(<span class="number">10</span>), from_hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>)); |
| <span class="macro">assert_eq!</span>(leap + Duration::seconds(-<span class="number">10</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>)); |
| <span class="macro">assert_eq!</span>(leap + Duration::days(<span class="number">1</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>));</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.add" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1065-1067">source</a><a href="#method.add" class="anchor"></a><h4 class="code-header">fn <a class="fnname">add</a>(self, rhs: <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Add%3CFixedOffset%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/offset/fixed.rs.html#191-198">source</a><a href="#impl-Add%3CFixedOffset%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Add<<a class="struct" href="../offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-3" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-3" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>+</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.add-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/offset/fixed.rs.html#195-197">source</a><a href="#method.add-1" class="anchor"></a><h4 class="code-header">fn <a class="fnname">add</a>(self, rhs: <a class="struct" href="../offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>Performs the <code>+</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-AddAssign%3CDuration%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1070-1075">source</a><a href="#impl-AddAssign%3CDuration%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl AddAssign<<a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">Duration</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.add_assign" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1072-1074">source</a><a href="#method.add_assign" class="anchor"></a><h4 class="code-header">fn <a class="fnname">add_assign</a>(&mut self, rhs: <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a>)</h4></section></summary><div class='docblock'>Performs the <code>+=</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Clone-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-Clone-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Clone for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#method.clone" class="anchor"></a><h4 class="code-header">fn <a class="fnname">clone</a>(&self) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.clone_from" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">clone_from</a>(&mut self, source: &Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1221-1247">source</a><a href="#impl-Debug-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Debug for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>The <code>Debug</code> output of the naive time <code>t</code> is the same as |
| <a href="../format/strftime/index.html"><code>t.format("%H:%M:%S%.f")</code></a>.</p> |
| <p>The string printed can be readily parsed via the <code>parse</code> method on <code>str</code>.</p> |
| <p>It should be noted that, for leap seconds not on the minute boundary, |
| it may print a representation not distinguishable from non-leap seconds. |
| This doesn’t matter in practice, since such leap seconds never happened. |
| (By the time of the first leap second on 1972-06-30, |
| every time zone offset around the world has standardized to the 5-minute alignment.)</p> |
| <h4 id="example-24"><a href="#example-24">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveTime::from_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap()), <span class="string">"23:56:04"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveTime::from_hms_milli_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12</span>).unwrap()), <span class="string">"23:56:04.012"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveTime::from_hms_micro_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">1234</span>).unwrap()), <span class="string">"23:56:04.001234"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">123456</span>).unwrap()), <span class="string">"23:56:04.000123456"</span>);</code></pre></div> |
| <p>Leap seconds may also be used.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveTime::from_hms_milli_opt(<span class="number">6</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap()), <span class="string">"06:59:60.500"</span>);</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1222-1246">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt</a>(&self, f: &mut Formatter<'_>) -> Result</h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Default-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1334-1338">source</a><a href="#impl-Default-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Default for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>The default value for a NaiveTime is midnight, 00:00:00 exactly.</p> |
| <h4 id="example-27"><a href="#example-27">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>default_time = NaiveTime::default(); |
| <span class="macro">assert_eq!</span>(default_time, NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap());</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.default" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1335-1337">source</a><a href="#method.default" class="anchor"></a><h4 class="code-header">fn <a class="fnname">default</a>() -> Self</h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Display-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1277-1281">source</a><a href="#impl-Display-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Display for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>The <code>Display</code> output of the naive time <code>t</code> is the same as |
| <a href="../format/strftime/index.html"><code>t.format("%H:%M:%S%.f")</code></a>.</p> |
| <p>The string printed can be readily parsed via the <code>parse</code> method on <code>str</code>.</p> |
| <p>It should be noted that, for leap seconds not on the minute boundary, |
| it may print a representation not distinguishable from non-leap seconds. |
| This doesn’t matter in practice, since such leap seconds never happened. |
| (By the time of the first leap second on 1972-06-30, |
| every time zone offset around the world has standardized to the 5-minute alignment.)</p> |
| <h4 id="example-25"><a href="#example-25">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, NaiveTime::from_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap()), <span class="string">"23:56:04"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, NaiveTime::from_hms_milli_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12</span>).unwrap()), <span class="string">"23:56:04.012"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, NaiveTime::from_hms_micro_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">1234</span>).unwrap()), <span class="string">"23:56:04.001234"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">123456</span>).unwrap()), <span class="string">"23:56:04.000123456"</span>);</code></pre></div> |
| <p>Leap seconds may also be used.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, NaiveTime::from_hms_milli_opt(<span class="number">6</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>).unwrap()), <span class="string">"06:59:60.500"</span>);</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1278-1280">source</a><a href="#method.fmt-1" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt</a>(&self, f: &mut Formatter<'_>) -> Result</h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-FromStr-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1302-1322">source</a><a href="#impl-FromStr-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl FromStr for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>Parsing a <code>str</code> into a <code>NaiveTime</code> uses the same format, |
| <a href="../format/strftime/index.html"><code>%H:%M:%S%.f</code></a>, as in <code>Debug</code> and <code>Display</code>.</p> |
| <h4 id="example-26"><a href="#example-26">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::NaiveTime; |
| |
| <span class="kw">let </span>t = NaiveTime::from_hms_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="string">"23:56:04"</span>.parse::<NaiveTime>(), <span class="prelude-val">Ok</span>(t)); |
| |
| <span class="kw">let </span>t = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="string">"23:56:4.012345678"</span>.parse::<NaiveTime>(), <span class="prelude-val">Ok</span>(t)); |
| |
| <span class="kw">let </span>t = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>).unwrap(); <span class="comment">// leap second |
| </span><span class="macro">assert_eq!</span>(<span class="string">"23:59:60.23456789"</span>.parse::<NaiveTime>(), <span class="prelude-val">Ok</span>(t)); |
| |
| <span class="macro">assert!</span>(<span class="string">"foo"</span>.parse::<NaiveTime>().is_err());</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Err" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Err" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Err</a> = <a class="struct" href="../format/struct.ParseError.html" title="struct chrono::format::ParseError">ParseError</a></h4></section></summary><div class='docblock'>The associated error which can be returned from parsing.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_str" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1305-1321">source</a><a href="#method.from_str" class="anchor"></a><h4 class="code-header">fn <a class="fnname">from_str</a>(s: &str) -> <a class="type" href="../format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a><<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class='docblock'>Parses a string <code>s</code> to return a value of this type. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Hash-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-Hash-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Hash for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.hash" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#method.hash" class="anchor"></a><h4 class="code-header">fn <a class="fnname">hash</a><__H: Hasher>(&self, state: &mut __H)</h4></section></summary><div class='docblock'>Feeds this value into the given [<code>Hasher</code>]. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.hash_slice" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.3.0">1.3.0</span><a href="#method.hash_slice" class="anchor"></a><h4 class="code-header">fn <a class="fnname">hash_slice</a><H>(data: &[Self], state: &mut H)<span class="where fmt-newline">where<br> H: Hasher,</span></h4></section></summary><div class='docblock'>Feeds a slice of this type into the given [<code>Hasher</code>]. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Ord-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-Ord-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Ord for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.cmp" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#method.cmp" class="anchor"></a><h4 class="code-header">fn <a class="fnname">cmp</a>(&self, other: &<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -> Ordering</h4></section></summary><div class='docblock'>This method returns an [<code>Ordering</code>] between <code>self</code> and <code>other</code>. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.max" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.21.0">1.21.0</span><a href="#method.max" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">max</a>(self, other: Self) -> Self</h4></section></summary><div class='docblock'>Compares and returns the maximum of two values. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.min" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.21.0">1.21.0</span><a href="#method.min" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">min</a>(self, other: Self) -> Self</h4></section></summary><div class='docblock'>Compares and returns the minimum of two values. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clamp" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.50.0">1.50.0</span><a href="#method.clamp" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">clamp</a>(self, min: Self, max: Self) -> Self<span class="where fmt-newline">where<br> Self: PartialOrd<Self>,</span></h4></section></summary><div class='docblock'>Restrict a value to a certain interval. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-PartialEq%3CNaiveTime%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-PartialEq%3CNaiveTime%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl PartialEq<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.eq" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#method.eq" class="anchor"></a><h4 class="code-header">fn <a class="fnname">eq</a>(&self, other: &<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -> bool</h4></section></summary><div class='docblock'>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used |
| by <code>==</code>. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.ne" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.ne" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">ne</a>(&self, other: &Rhs) -> bool</h4></section></summary><div class='docblock'>This method tests for <code>!=</code>. The default implementation is almost always |
| sufficient, and should not be overridden without very good reason. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-PartialOrd%3CNaiveTime%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-PartialOrd%3CNaiveTime%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl PartialOrd<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.partial_cmp" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#method.partial_cmp" class="anchor"></a><h4 class="code-header">fn <a class="fnname">partial_cmp</a>(&self, other: &<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -> Option<Ordering></h4></section></summary><div class='docblock'>This method returns an ordering between <code>self</code> and <code>other</code> values if one exists. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.lt" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.lt" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">lt</a>(&self, other: &Rhs) -> bool</h4></section></summary><div class='docblock'>This method tests less than (for <code>self</code> and <code>other</code>) and is used by the <code><</code> operator. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.le" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.le" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">le</a>(&self, other: &Rhs) -> bool</h4></section></summary><div class='docblock'>This method tests less than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code><=</code> |
| operator. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.gt" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.gt" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">gt</a>(&self, other: &Rhs) -> bool</h4></section></summary><div class='docblock'>This method tests greater than (for <code>self</code> and <code>other</code>) and is used by the <code>></code> operator. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.ge" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.ge" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">ge</a>(&self, other: &Rhs) -> bool</h4></section></summary><div class='docblock'>This method tests greater than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code>>=</code> |
| operator. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Sub%3CDuration%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1123-1130">source</a><a href="#impl-Sub%3CDuration%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Sub<<a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">Duration</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>A subtraction of <code>Duration</code> from <code>NaiveTime</code> wraps around and never overflows or underflows. |
| In particular the addition ignores integral number of days. |
| It is the same as the addition with a negated <code>Duration</code>.</p> |
| <p>As a part of Chrono’s <a href="struct.NaiveTime.html#leap-second-handling">leap second handling</a>, the subtraction assumes that <strong>there is no leap |
| second ever</strong>, except when the <code>NaiveTime</code> itself represents a leap second in which case the |
| assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p> |
| <h4 id="example-22"><a href="#example-22">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Duration, NaiveTime}; |
| |
| <span class="kw">let </span>from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() }; |
| |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::zero(), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::seconds(<span class="number">1</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::seconds(<span class="number">60 </span>+ <span class="number">5</span>), from_hmsm(<span class="number">3</span>, <span class="number">4</span>, <span class="number">2</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::seconds(<span class="number">2</span><span class="kw-2">*</span><span class="number">60</span><span class="kw-2">*</span><span class="number">60 </span>+ <span class="number">6</span><span class="kw-2">*</span><span class="number">60</span>), from_hmsm(<span class="number">0</span>, <span class="number">59</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::milliseconds(<span class="number">80</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">920</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">950</span>) - Duration::milliseconds(<span class="number">280</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">670</span>));</code></pre></div> |
| <p>The subtraction wraps around.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::seconds(<span class="number">8</span><span class="kw-2">*</span><span class="number">60</span><span class="kw-2">*</span><span class="number">60</span>), from_hmsm(<span class="number">19</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>) - Duration::days(<span class="number">800</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">0</span>));</code></pre></div> |
| <p>Leap seconds are handled, but the subtraction assumes that it is the only leap second happened.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>); |
| <span class="macro">assert_eq!</span>(leap - Duration::zero(), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)); |
| <span class="macro">assert_eq!</span>(leap - Duration::milliseconds(<span class="number">200</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>)); |
| <span class="macro">assert_eq!</span>(leap - Duration::milliseconds(<span class="number">500</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)); |
| <span class="macro">assert_eq!</span>(leap - Duration::seconds(<span class="number">60</span>), from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>)); |
| <span class="macro">assert_eq!</span>(leap - Duration::days(<span class="number">1</span>), from_hmsm(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>));</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-1" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sub" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1127-1129">source</a><a href="#method.sub" class="anchor"></a><h4 class="code-header">fn <a class="fnname">sub</a>(self, rhs: <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Sub%3CFixedOffset%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/offset/fixed.rs.html#200-207">source</a><a href="#impl-Sub%3CFixedOffset%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Sub<<a class="struct" href="../offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-4" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-4" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Output</a> = <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sub-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/offset/fixed.rs.html#204-206">source</a><a href="#method.sub-2" class="anchor"></a><h4 class="code-header">fn <a class="fnname">sub</a>(self, rhs: <a class="struct" href="../offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>) -> <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Sub%3CNaiveTime%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1184-1191">source</a><a href="#impl-Sub%3CNaiveTime%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Sub<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="docblock"><p>Subtracts another <code>NaiveTime</code> from the current time. |
| Returns a <code>Duration</code> within +/- 1 day. |
| This does not overflow or underflow at all.</p> |
| <p>As a part of Chrono’s <a href="#leap-second-handling">leap second handling</a>, |
| the subtraction assumes that <strong>there is no leap second ever</strong>, |
| except when any of the <code>NaiveTime</code>s themselves represents a leap second |
| in which case the assumption becomes that |
| <strong>there are exactly one (or two) leap second(s) ever</strong>.</p> |
| <p>The implementation is a wrapper around |
| <a href="#method.signed_duration_since"><code>NaiveTime::signed_duration_since</code></a>.</p> |
| <h4 id="example-23"><a href="#example-23">Example</a></h4> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{Duration, NaiveTime}; |
| |
| <span class="kw">let </span>from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() }; |
| |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), Duration::zero()); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">875</span>), Duration::milliseconds(<span class="number">25</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">925</span>), Duration::milliseconds(<span class="number">975</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">900</span>), Duration::seconds(<span class="number">7</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">7</span>, <span class="number">900</span>), Duration::seconds(<span class="number">5 </span>* <span class="number">60</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">0</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), Duration::seconds(<span class="number">3 </span>* <span class="number">3600</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">4</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>), Duration::seconds(-<span class="number">3600</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">900</span>) - from_hmsm(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>, <span class="number">800</span>), |
| Duration::seconds(<span class="number">3600 </span>+ <span class="number">60 </span>+ <span class="number">1</span>) + Duration::milliseconds(<span class="number">100</span>));</code></pre></div> |
| <p>Leap seconds are handled, but the subtraction assumes that |
| there were no other leap seconds happened.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>) - from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">0</span>), Duration::seconds(<span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_500</span>) - from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">0</span>), |
| Duration::milliseconds(<span class="number">1500</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>) - from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>), Duration::seconds(<span class="number">60</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>) - from_hmsm(<span class="number">2</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>), Duration::seconds(<span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(from_hmsm(<span class="number">3</span>, <span class="number">0</span>, <span class="number">59</span>, <span class="number">1_000</span>) - from_hmsm(<span class="number">2</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>), |
| Duration::seconds(<span class="number">61</span>));</code></pre></div> |
| </div><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Output-2" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Output-2" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Output</a> = <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">Duration</a></h4></section></summary><div class='docblock'>The resulting type after applying the <code>-</code> operator.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sub-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1188-1190">source</a><a href="#method.sub-1" class="anchor"></a><h4 class="code-header">fn <a class="fnname">sub</a>(self, rhs: <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -> <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a></h4></section></summary><div class='docblock'>Performs the <code>-</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-SubAssign%3CDuration%3E-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1132-1137">source</a><a href="#impl-SubAssign%3CDuration%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl SubAssign<<a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">Duration</a>> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.sub_assign" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1134-1136">source</a><a href="#method.sub_assign" class="anchor"></a><h4 class="code-header">fn <a class="fnname">sub_assign</a>(&mut self, rhs: <a class="struct" href="../struct.Duration.html" title="struct chrono::Duration">OldDuration</a>)</h4></section></summary><div class='docblock'>Performs the <code>-=</code> operation. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Timelike-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#800-1009">source</a><a href="#impl-Timelike-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="../trait.Timelike.html" title="trait chrono::Timelike">Timelike</a> for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.hour" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#812-814">source</a><a href="#method.hour" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.hour" class="fnname">hour</a>(&self) -> u32</h4></section></summary><div class="docblock"><p>Returns the hour number from 0 to 23.</p> |
| <h5 id="example-12"><a href="#example-12">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap().hour(), <span class="number">0</span>); |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap().hour(), <span class="number">23</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.minute" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#827-829">source</a><a href="#method.minute" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.minute" class="fnname">minute</a>(&self) -> u32</h4></section></summary><div class="docblock"><p>Returns the minute number from 0 to 59.</p> |
| <h5 id="example-13"><a href="#example-13">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap().minute(), <span class="number">0</span>); |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap().minute(), <span class="number">56</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.second" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#854-856">source</a><a href="#method.second" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.second" class="fnname">second</a>(&self) -> u32</h4></section></summary><div class="docblock"><p>Returns the second number from 0 to 59.</p> |
| <h5 id="example-14"><a href="#example-14">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap().second(), <span class="number">0</span>); |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap().second(), <span class="number">4</span>);</code></pre></div> |
| <p>This method never returns 60 even when it is a leap second. |
| (<a href="#leap-second-handling">Why?</a>) |
| Use the proper <a href="#method.format">formatting method</a> to get a human-readable representation.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = NaiveTime::from_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(leap.second(), <span class="number">59</span>); |
| <span class="macro">assert_eq!</span>(leap.format(<span class="string">"%H:%M:%S"</span>).to_string(), <span class="string">"23:59:60"</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.nanosecond" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#883-885">source</a><a href="#method.nanosecond" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.nanosecond" class="fnname">nanosecond</a>(&self) -> u32</h4></section></summary><div class="docblock"><p>Returns the number of nanoseconds since the whole non-leap second. |
| The range from 1,000,000,000 to 1,999,999,999 represents |
| the <a href="#leap-second-handling">leap second</a>.</p> |
| <h5 id="example-15"><a href="#example-15">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_opt(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>).unwrap().nanosecond(), <span class="number">0</span>); |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap().nanosecond(), <span class="number">12_345_678</span>);</code></pre></div> |
| <p>Leap seconds may have seemingly out-of-range return values. |
| You can reduce the range with <code>time.nanosecond() % 1_000_000_000</code>, or |
| use the proper <a href="#method.format">formatting method</a> to get a human-readable representation.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>leap = NaiveTime::from_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(leap.nanosecond(), <span class="number">1_000_000_000</span>); |
| <span class="macro">assert_eq!</span>(leap.format(<span class="string">"%H:%M:%S%.9f"</span>).to_string(), <span class="string">"23:59:60.000000000"</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_hour" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#901-907">source</a><a href="#method.with_hour" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.with_hour" class="fnname">with_hour</a>(&self, hour: u32) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> with the hour number changed.</p> |
| <p>Returns <code>None</code> when the resulting <code>NaiveTime</code> would be invalid.</p> |
| <h5 id="example-16"><a href="#example-16">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="kw">let </span>dt = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(dt.with_hour(<span class="number">7</span>), <span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">7</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(dt.with_hour(<span class="number">24</span>), <span class="prelude-val">None</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_minute" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#923-929">source</a><a href="#method.with_minute" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.with_minute" class="fnname">with_minute</a>(&self, min: u32) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> with the minute number changed.</p> |
| <p>Returns <code>None</code> when the resulting <code>NaiveTime</code> would be invalid.</p> |
| <h5 id="example-17"><a href="#example-17">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="kw">let </span>dt = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(dt.with_minute(<span class="number">45</span>), <span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">45</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(dt.with_minute(<span class="number">60</span>), <span class="prelude-val">None</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_second" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#947-953">source</a><a href="#method.with_second" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.with_second" class="fnname">with_second</a>(&self, sec: u32) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> with the second number changed.</p> |
| <p>Returns <code>None</code> when the resulting <code>NaiveTime</code> would be invalid. |
| As with the <a href="#method.second"><code>second</code></a> method, |
| the input range is restricted to 0 through 59.</p> |
| <h5 id="example-18"><a href="#example-18">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="kw">let </span>dt = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(dt.with_second(<span class="number">17</span>), <span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">17</span>, <span class="number">12_345_678</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(dt.with_second(<span class="number">60</span>), <span class="prelude-val">None</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_nanosecond" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#984-989">source</a><a href="#method.with_nanosecond" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#tymethod.with_nanosecond" class="fnname">with_nanosecond</a>(&self, nano: u32) -> Option<<a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>></h4></section></summary><div class="docblock"><p>Makes a new <code>NaiveTime</code> with nanoseconds since the whole non-leap second changed.</p> |
| <p>Returns <code>None</code> when the resulting <code>NaiveTime</code> would be invalid. |
| As with the <a href="#method.nanosecond"><code>nanosecond</code></a> method, |
| the input range can exceed 1,000,000,000 for leap seconds.</p> |
| <h5 id="example-19"><a href="#example-19">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="kw">let </span>dt = NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(dt.with_nanosecond(<span class="number">333_333_333</span>), |
| <span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">333_333_333</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(dt.with_nanosecond(<span class="number">2_000_000_000</span>), <span class="prelude-val">None</span>);</code></pre></div> |
| <p>Leap seconds can theoretically follow <em>any</em> whole second. |
| The following would be a proper leap second at the time zone offset of UTC-00:03:57 |
| (there are several historical examples comparable to this “non-sense” offset), |
| and therefore is allowed.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(dt.with_nanosecond(<span class="number">1_333_333_333</span>), |
| <span class="prelude-val">Some</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">1_333_333_333</span>).unwrap()));</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.num_seconds_from_midnight" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#1006-1008">source</a><a href="#method.num_seconds_from_midnight" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#method.num_seconds_from_midnight" class="fnname">num_seconds_from_midnight</a>(&self) -> u32</h4></section></summary><div class="docblock"><p>Returns the number of non-leap seconds past the last midnight.</p> |
| <h5 id="example-20"><a href="#example-20">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>chrono::{NaiveTime, Timelike}; |
| |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_opt(<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>).unwrap().num_seconds_from_midnight(), |
| <span class="number">3723</span>); |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_nano_opt(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>, <span class="number">12_345_678</span>).unwrap().num_seconds_from_midnight(), |
| <span class="number">86164</span>); |
| <span class="macro">assert_eq!</span>(NaiveTime::from_hms_milli_opt(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000</span>).unwrap().num_seconds_from_midnight(), |
| <span class="number">86399</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.hour12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/chrono/traits.rs.html#129-136">source</a><a href="#method.hour12" class="anchor"></a><h4 class="code-header">fn <a href="../trait.Timelike.html#method.hour12" class="fnname">hour12</a>(&self) -> (bool, u32)</h4></section></summary><div class='docblock'>Returns the hour number from 1 to 12 with a boolean flag, |
| which is false for AM and true for PM. <a href="../trait.Timelike.html#method.hour12">Read more</a></div></details></div></details><section id="impl-Copy-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-Copy-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Copy for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-Eq-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-Eq-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Eq for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-StructuralEq-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-StructuralEq-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl StructuralEq for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-StructuralPartialEq-for-NaiveTime" class="impl has-srclink"><a class="srclink rightside" href="../../src/chrono/naive/time/mod.rs.html#191">source</a><a href="#impl-StructuralPartialEq-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl StructuralPartialEq for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-NaiveTime" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl RefUnwindSafe for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-Send-for-NaiveTime" class="impl has-srclink"><a href="#impl-Send-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Send for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-Sync-for-NaiveTime" class="impl has-srclink"><a href="#impl-Sync-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Sync for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-Unpin-for-NaiveTime" class="impl has-srclink"><a href="#impl-Unpin-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl Unpin for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section><section id="impl-UnwindSafe-for-NaiveTime" class="impl has-srclink"><a href="#impl-UnwindSafe-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl UnwindSafe for <a class="struct" href="struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-NaiveTime" class="impl has-srclink"><a href="#impl-Any-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T> Any for T<span class="where fmt-newline">where<br> T: 'static + ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a class="fnname">type_id</a>(&self) -> TypeId</h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-NaiveTime" class="impl has-srclink"><a href="#impl-Borrow%3CT%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T> Borrow<T> for T<span class="where fmt-newline">where<br> T: ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a class="fnname">borrow</a>(&self) -> &T</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-NaiveTime" class="impl has-srclink"><a href="#impl-BorrowMut%3CT%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T> BorrowMut<T> for T<span class="where fmt-newline">where<br> T: ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">borrow_mut</a>(&mut self) -> &mut T</h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-NaiveTime" class="impl has-srclink"><a href="#impl-From%3CT%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T> From<T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-NaiveTime" class="impl has-srclink"><a href="#impl-Into%3CU%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T, U> Into<U> for T<span class="where fmt-newline">where<br> U: From<T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a class="fnname">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p> |
| <p>That is, this conversion is whatever the implementation of |
| <code>[From]<T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToOwned-for-NaiveTime" class="impl has-srclink"><a href="#impl-ToOwned-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T> ToOwned for T<span class="where fmt-newline">where<br> T: Clone,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Owned" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl has-srclink"><a href="#method.to_owned" class="anchor"></a><h4 class="code-header">fn <a class="fnname">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl has-srclink"><a href="#method.clone_into" class="anchor"></a><h4 class="code-header">fn <a class="fnname">clone_into</a>(&self, target: &mut T)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToString-for-NaiveTime" class="impl has-srclink"><a href="#impl-ToString-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T> ToString for T<span class="where fmt-newline">where<br> T: Display + ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_string" class="method trait-impl has-srclink"><a href="#method.to_string" class="anchor"></a><h4 class="code-header">default fn <a class="fnname">to_string</a>(&self) -> String</h4></section></summary><div class='docblock'>Converts the given value to a <code>String</code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-NaiveTime" class="impl has-srclink"><a href="#impl-TryFrom%3CU%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T, U> TryFrom<U> for T<span class="where fmt-newline">where<br> U: Into<T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Error</a> = Infallible</h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a class="fnname">try_from</a>(value: U) -> Result<T, <T as TryFrom<U>>::Error></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-NaiveTime" class="impl has-srclink"><a href="#impl-TryInto%3CU%3E-for-NaiveTime" class="anchor"></a><h3 class="code-header">impl<T, U> TryInto<U> for T<span class="where fmt-newline">where<br> U: TryFrom<T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Error</a> = <U as TryFrom<T>>::Error</h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a class="fnname">try_into</a>(self) -> Result<U, <U as TryFrom<T>>::Error></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="chrono" 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