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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `Datelike` trait in crate `chrono`."><meta name="keywords" content="rust, rustlang, rust-lang, Datelike"><title>chrono::Datelike - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../ayu.css" disabled ><script id="default-settings"></script><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../chrono/index.html'><div class='logo-container rust-logo'><img src='../rust-logo.png' alt='logo'></div></a><p class="location">Trait Datelike</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.weekday">weekday</a><a href="#tymethod.month">month</a><a href="#tymethod.year">year</a><a href="#tymethod.month0">month0</a><a href="#tymethod.day">day</a><a href="#tymethod.day0">day0</a><a href="#tymethod.ordinal">ordinal</a><a href="#tymethod.ordinal0">ordinal0</a><a href="#tymethod.iso_week">iso_week</a><a href="#tymethod.with_year">with_year</a><a href="#tymethod.with_month">with_month</a><a href="#tymethod.with_month0">with_month0</a><a href="#tymethod.with_day">with_day</a><a href="#tymethod.with_day0">with_day0</a><a href="#tymethod.with_ordinal">with_ordinal</a><a href="#tymethod.with_ordinal0">with_ordinal0</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.year_ce">year_ce</a><a href="#method.num_days_from_ce">num_days_from_ce</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class="location"><a href="index.html">chrono</a></p><div id="sidebar-vars" data-name="Datelike" data-ty="trait" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" class="help-button">?</button>
<a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Trait <a href="index.html">chrono</a>::<wbr><a class="trait" href="">Datelike</a></span><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span><a class="srclink" href="../src/chrono/lib.rs.html#1245-1360" title="goto source code">[src]</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust trait">pub trait Datelike: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
fn <a href="#tymethod.year" class="fnname">year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.month" class="fnname">month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.month0" class="fnname">month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.day" class="fnname">day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.day0" class="fnname">day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.ordinal" class="fnname">ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.ordinal0" class="fnname">ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.weekday" class="fnname">weekday</a>(&amp;self) -&gt; <a class="enum" href="../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.iso_week" class="fnname">iso_week</a>(&amp;self) -&gt; <a class="struct" href="../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a>;
<div class="item-spacer"></div> fn <a href="#tymethod.with_year" class="fnname">with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class="item-spacer"></div> fn <a href="#tymethod.with_month" class="fnname">with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class="item-spacer"></div> fn <a href="#tymethod.with_month0" class="fnname">with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class="item-spacer"></div> fn <a href="#tymethod.with_day" class="fnname">with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class="item-spacer"></div> fn <a href="#tymethod.with_day0" class="fnname">with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class="item-spacer"></div> fn <a href="#tymethod.with_ordinal" class="fnname">with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class="item-spacer"></div> fn <a href="#tymethod.with_ordinal0" class="fnname">with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
fn <a href="#method.year_ce" class="fnname">year_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a> { ... }
<div class="item-spacer"></div> fn <a href="#method.num_days_from_ce" class="fnname">num_days_from_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a> { ... }
}</pre></div><div class="docblock"><p>The common set of methods for date component.</p>
</div><h2 id="required-methods" class="small-section-header">Required methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><h3 id="tymethod.year" class="method"><code>fn <a href="#tymethod.year" class="fnname">year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1247" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the year number in the <a href="./naive/struct.NaiveDate.html#calendar-date">calendar date</a>.</p>
</div><h3 id="tymethod.month" class="method"><code>fn <a href="#tymethod.month" class="fnname">month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1264" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the month number starting from 1.</p>
<p>The return value ranges from 1 to 12.</p>
</div><h3 id="tymethod.month0" class="method"><code>fn <a href="#tymethod.month0" class="fnname">month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1269" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the month number starting from 0.</p>
<p>The return value ranges from 0 to 11.</p>
</div><h3 id="tymethod.day" class="method"><code>fn <a href="#tymethod.day" class="fnname">day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1274" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the day of month starting from 1.</p>
<p>The return value ranges from 1 to 31. (The last day of month differs by months.)</p>
</div><h3 id="tymethod.day0" class="method"><code>fn <a href="#tymethod.day0" class="fnname">day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1279" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the day of month starting from 0.</p>
<p>The return value ranges from 0 to 30. (The last day of month differs by months.)</p>
</div><h3 id="tymethod.ordinal" class="method"><code>fn <a href="#tymethod.ordinal" class="fnname">ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1284" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the day of year starting from 1.</p>
<p>The return value ranges from 1 to 366. (The last day of year differs by years.)</p>
</div><h3 id="tymethod.ordinal0" class="method"><code>fn <a href="#tymethod.ordinal0" class="fnname">ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1289" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the day of year starting from 0.</p>
<p>The return value ranges from 0 to 365. (The last day of year differs by years.)</p>
</div><h3 id="tymethod.weekday" class="method"><code>fn <a href="#tymethod.weekday" class="fnname">weekday</a>(&amp;self) -&gt; <a class="enum" href="../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1292" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the day of week.</p>
</div><h3 id="tymethod.iso_week" class="method"><code>fn <a href="#tymethod.iso_week" class="fnname">iso_week</a>(&amp;self) -&gt; <a class="struct" href="../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1295" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the ISO week.</p>
</div><h3 id="tymethod.with_year" class="method"><code>fn <a href="#tymethod.with_year" class="fnname">with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1300" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the year number changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div><h3 id="tymethod.with_month" class="method"><code>fn <a href="#tymethod.with_month" class="fnname">with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1305" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the month number (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div><h3 id="tymethod.with_month0" class="method"><code>fn <a href="#tymethod.with_month0" class="fnname">with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1310" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the month number (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div><h3 id="tymethod.with_day" class="method"><code>fn <a href="#tymethod.with_day" class="fnname">with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1315" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the day of month (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div><h3 id="tymethod.with_day0" class="method"><code>fn <a href="#tymethod.with_day0" class="fnname">with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1320" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the day of month (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div><h3 id="tymethod.with_ordinal" class="method"><code>fn <a href="#tymethod.with_ordinal" class="fnname">with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1325" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the day of year (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div><h3 id="tymethod.with_ordinal0" class="method"><code>fn <a href="#tymethod.with_ordinal0" class="fnname">with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code><a class="srclink" href="../src/chrono/lib.rs.html#1330" title="goto source code">[src]</a></h3><div class="docblock"><p>Makes a new value with the day of year (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting value would be invalid.</p>
</div></div><span class="loading-content">Loading content...</span><h2 id="provided-methods" class="small-section-header">Provided methods<a href="#provided-methods" class="anchor"></a></h2><div class="methods"><h3 id="method.year_ce" class="method"><code>fn <a href="#method.year_ce" class="fnname">year_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1252-1259" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the absolute year number starting from 1 with a boolean flag,
which is false when the year predates the epoch (BCE/BC) and true otherwise (CE/AD).</p>
</div><h3 id="method.num_days_from_ce" class="method"><code>fn <a href="#method.num_days_from_ce" class="fnname">num_days_from_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class="srclink" href="../src/chrono/lib.rs.html#1344-1359" title="goto source code">[src]</a></h3><div class="docblock"><p>Counts the days in the proleptic Gregorian calendar, with January 1, Year 1 (CE) as day 1.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">num_days_from_ce</span>(), <span class="number">719_163</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">num_days_from_ce</span>(), <span class="number">366</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">num_days_from_ce</span>(), <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">num_days_from_ce</span>(), <span class="op">-</span><span class="number">365</span>);</pre></div>
</div></div><span class="loading-content">Loading content...</span><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"><h3 id="impl-Datelike" class="impl"><code class="in-band">impl Datelike for <a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a></code><a href="#impl-Datelike" class="anchor"></a><a class="srclink" href="../src/chrono/naive/date.rs.html#1102-1442" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.year" class="method"><code>fn <a href="#method.year" class="fnname">year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1114-1116" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the year number in the <a href="#calendar-date">calendar date</a>.</p>
<h1 id="example" class="section-header"><a href="#example">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">year</span>(), <span class="number">2015</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">year</span>(), <span class="op">-</span><span class="number">308</span>); <span class="comment">// 309 BCE</span></pre></div>
</div><h4 id="method.month" class="method"><code>fn <a href="#method.month" class="fnname">month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1131-1133" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the month number starting from 1.</p>
<p>The return value ranges from 1 to 12.</p>
<h1 id="example-1" class="section-header"><a href="#example-1">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">month</span>(), <span class="number">9</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">month</span>(), <span class="number">3</span>);</pre></div>
</div><h4 id="method.month0" class="method"><code>fn <a href="#method.month0" class="fnname">month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1148-1150" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the month number starting from 0.</p>
<p>The return value ranges from 0 to 11.</p>
<h1 id="example-2" class="section-header"><a href="#example-2">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">month0</span>(), <span class="number">8</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">month0</span>(), <span class="number">2</span>);</pre></div>
</div><h4 id="method.day" class="method"><code>fn <a href="#method.day" class="fnname">day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1188-1190" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of month starting from 1.</p>
<p>The return value ranges from 1 to 31. (The last day of month differs by months.)</p>
<h1 id="example-3" class="section-header"><a href="#example-3">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">day</span>(), <span class="number">8</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">day</span>(), <span class="number">14</span>);</pre></div>
<p>Combined with <a href="#method.pred"><code>NaiveDate::pred</code></a>,
one can determine the number of days in a particular month.
(Note that this panics when <code>year</code> is out of range.)</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="kw">fn</span> <span class="ident">ndays_in_month</span>(<span class="ident">year</span>: <span class="ident">i32</span>, <span class="ident">month</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">u32</span> {
<span class="comment">// the first day of the next month...</span>
<span class="kw">let</span> (<span class="ident">y</span>, <span class="ident">m</span>) <span class="op">=</span> <span class="kw">if</span> <span class="ident">month</span> <span class="op">=</span><span class="op">=</span> <span class="number">12</span> { (<span class="ident">year</span> <span class="op">+</span> <span class="number">1</span>, <span class="number">1</span>) } <span class="kw">else</span> { (<span class="ident">year</span>, <span class="ident">month</span> <span class="op">+</span> <span class="number">1</span>) };
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="ident">y</span>, <span class="ident">m</span>, <span class="number">1</span>);
<span class="comment">// ...is preceded by the last day of the original month</span>
<span class="ident">d</span>.<span class="ident">pred</span>().<span class="ident">day</span>()
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_month</span>(<span class="number">2015</span>, <span class="number">8</span>), <span class="number">31</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_month</span>(<span class="number">2015</span>, <span class="number">9</span>), <span class="number">30</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_month</span>(<span class="number">2015</span>, <span class="number">12</span>), <span class="number">31</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_month</span>(<span class="number">2016</span>, <span class="number">2</span>), <span class="number">29</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_month</span>(<span class="number">2017</span>, <span class="number">2</span>), <span class="number">28</span>);</pre></div>
</div><h4 id="method.day0" class="method"><code>fn <a href="#method.day0" class="fnname">day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1205-1207" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of month starting from 0.</p>
<p>The return value ranges from 0 to 30. (The last day of month differs by months.)</p>
<h1 id="example-4" class="section-header"><a href="#example-4">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">day0</span>(), <span class="number">7</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">day0</span>(), <span class="number">13</span>);</pre></div>
</div><h4 id="method.ordinal" class="method"><code>fn <a href="#method.ordinal" class="fnname">ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1244-1246" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of year starting from 1.</p>
<p>The return value ranges from 1 to 366. (The last day of year differs by years.)</p>
<h1 id="example-5" class="section-header"><a href="#example-5">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">ordinal</span>(), <span class="number">251</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">ordinal</span>(), <span class="number">74</span>);</pre></div>
<p>Combined with <a href="#method.pred"><code>NaiveDate::pred</code></a>,
one can determine the number of days in a particular year.
(Note that this panics when <code>year</code> is out of range.)</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="kw">fn</span> <span class="ident">ndays_in_year</span>(<span class="ident">year</span>: <span class="ident">i32</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">u32</span> {
<span class="comment">// the first day of the next year...</span>
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="ident">year</span> <span class="op">+</span> <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="comment">// ...is preceded by the last day of the original year</span>
<span class="ident">d</span>.<span class="ident">pred</span>().<span class="ident">ordinal</span>()
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_year</span>(<span class="number">2015</span>), <span class="number">365</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_year</span>(<span class="number">2016</span>), <span class="number">366</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_year</span>(<span class="number">2017</span>), <span class="number">365</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_year</span>(<span class="number">2000</span>), <span class="number">366</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ndays_in_year</span>(<span class="number">2100</span>), <span class="number">365</span>);</pre></div>
</div><h4 id="method.ordinal0" class="method"><code>fn <a href="#method.ordinal0" class="fnname">ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1261-1263" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of year starting from 0.</p>
<p>The return value ranges from 0 to 365. (The last day of year differs by years.)</p>
<h1 id="example-6" class="section-header"><a href="#example-6">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">ordinal0</span>(), <span class="number">250</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">ordinal0</span>(), <span class="number">73</span>);</pre></div>
</div><h4 id="method.weekday" class="method"><code>fn <a href="#method.weekday" class="fnname">weekday</a>(&amp;self) -&gt; <a class="enum" href="../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1276-1278" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of week.</p>
<h1 id="example-7" class="section-header"><a href="#example-7">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>, <span class="ident">Weekday</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Tue</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">3</span>, <span class="number">14</span>).<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Fri</span>);</pre></div>
</div><h4 id="method.iso_week" class="method hidden"><code>fn <a href="#method.iso_week" class="fnname">iso_week</a>(&amp;self) -&gt; <a class="struct" href="../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code><a class="srclink" href="../src/chrono/naive/date.rs.html#1281-1283" title="goto source code">[src]</a></h4><h4 id="method.with_year" class="method"><code>fn <a href="#method.with_year" class="fnname">with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1308-1317" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the year number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-8" class="section-header"><a href="#example-8">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_year</span>(<span class="number">2016</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_year</span>(<span class="op">-</span><span class="number">308</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">9</span>, <span class="number">8</span>)));</pre></div>
<p>A leap day (February 29) is a good example that this method can return <code>None</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">with_year</span>(<span class="number">2015</span>).<span class="ident">is_none</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">with_year</span>(<span class="number">2020</span>).<span class="ident">is_some</span>());</pre></div>
</div><h4 id="method.with_month" class="method"><code>fn <a href="#method.with_month" class="fnname">with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1334-1336" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the month number (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-9" class="section-header"><a href="#example-9">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_month</span>(<span class="number">10</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_month</span>(<span class="number">13</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">with_month</span>(<span class="number">2</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre></div>
</div><h4 id="method.with_month0" class="method"><code>fn <a href="#method.with_month0" class="fnname">with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1353-1355" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the month number (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-10" class="section-header"><a href="#example-10">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_month0</span>(<span class="number">9</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_month0</span>(<span class="number">12</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">with_month0</span>(<span class="number">1</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre></div>
</div><h4 id="method.with_day" class="method"><code>fn <a href="#method.with_day" class="fnname">with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1372-1374" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the day of month (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-11" class="section-header"><a href="#example-11">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_day</span>(<span class="number">30</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_day</span>(<span class="number">31</span>),
<span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre></div>
</div><h4 id="method.with_day0" class="method"><code>fn <a href="#method.with_day0" class="fnname">with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1391-1393" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the day of month (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-12" class="section-header"><a href="#example-12">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_day0</span>(<span class="number">29</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">with_day0</span>(<span class="number">30</span>),
<span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre></div>
</div><h4 id="method.with_ordinal" class="method"><code>fn <a href="#method.with_ordinal" class="fnname">with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1415-1417" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the day of year (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-13" class="section-header"><a href="#example-13">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal</span>(<span class="number">366</span>),
<span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal</span>(<span class="number">366</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>)));</pre></div>
</div><h4 id="method.with_ordinal0" class="method"><code>fn <a href="#method.with_ordinal0" class="fnname">with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>&gt;</code><a class="srclink" href="../src/chrono/naive/date.rs.html#1439-1441" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDate</code> with the day of year (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDate</code> would be invalid.</p>
<h1 id="example-14" class="section-header"><a href="#example-14">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">Datelike</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal0</span>(<span class="number">365</span>),
<span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">with_ordinal0</span>(<span class="number">365</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>)));</pre></div>
</div></div><h3 id="impl-Datelike-1" class="impl"><code class="in-band">impl Datelike for <a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href="#impl-Datelike-1" class="anchor"></a><a class="srclink" href="../src/chrono/naive/datetime.rs.html#702-1018" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.year-1" class="method"><code>fn <a href="#method.year-1" class="fnname">year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#716-718" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the year number in the <a href="./index.html#calendar-date">calendar date</a>.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.year"><code>NaiveDate::year</code></a> method.</p>
<h1 id="example-15" class="section-header"><a href="#example-15">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">year</span>(), <span class="number">2015</span>);</pre></div>
</div><h4 id="method.month-1" class="method"><code>fn <a href="#method.month-1" class="fnname">month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#735-737" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the month number starting from 1.</p>
<p>The return value ranges from 1 to 12.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month"><code>NaiveDate::month</code></a> method.</p>
<h1 id="example-16" class="section-header"><a href="#example-16">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">month</span>(), <span class="number">9</span>);</pre></div>
</div><h4 id="method.month0-1" class="method"><code>fn <a href="#method.month0-1" class="fnname">month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#754-756" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the month number starting from 0.</p>
<p>The return value ranges from 0 to 11.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month0"><code>NaiveDate::month0</code></a> method.</p>
<h1 id="example-17" class="section-header"><a href="#example-17">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">month0</span>(), <span class="number">8</span>);</pre></div>
</div><h4 id="method.day-1" class="method"><code>fn <a href="#method.day-1" class="fnname">day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#773-775" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of month starting from 1.</p>
<p>The return value ranges from 1 to 31. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day"><code>NaiveDate::day</code></a> method.</p>
<h1 id="example-18" class="section-header"><a href="#example-18">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">day</span>(), <span class="number">25</span>);</pre></div>
</div><h4 id="method.day0-1" class="method"><code>fn <a href="#method.day0-1" class="fnname">day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#792-794" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of month starting from 0.</p>
<p>The return value ranges from 0 to 30. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day0"><code>NaiveDate::day0</code></a> method.</p>
<h1 id="example-19" class="section-header"><a href="#example-19">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">day0</span>(), <span class="number">24</span>);</pre></div>
</div><h4 id="method.ordinal-1" class="method"><code>fn <a href="#method.ordinal-1" class="fnname">ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#811-813" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of year starting from 1.</p>
<p>The return value ranges from 1 to 366. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal"><code>NaiveDate::ordinal</code></a> method.</p>
<h1 id="example-20" class="section-header"><a href="#example-20">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">ordinal</span>(), <span class="number">268</span>);</pre></div>
</div><h4 id="method.ordinal0-1" class="method"><code>fn <a href="#method.ordinal0-1" class="fnname">ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#830-832" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of year starting from 0.</p>
<p>The return value ranges from 0 to 365. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal0"><code>NaiveDate::ordinal0</code></a> method.</p>
<h1 id="example-21" class="section-header"><a href="#example-21">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">ordinal0</span>(), <span class="number">267</span>);</pre></div>
</div><h4 id="method.weekday-1" class="method"><code>fn <a href="#method.weekday-1" class="fnname">weekday</a>(&amp;self) -&gt; <a class="enum" href="../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#847-849" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the day of week.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.weekday"><code>NaiveDate::weekday</code></a> method.</p>
<h1 id="example-22" class="section-header"><a href="#example-22">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>, <span class="ident">Weekday</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Fri</span>);</pre></div>
</div><h4 id="method.iso_week-1" class="method hidden"><code>fn <a href="#method.iso_week-1" class="fnname">iso_week</a>(&amp;self) -&gt; <a class="struct" href="../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#852-854" title="goto source code">[src]</a></h4><h4 id="method.with_year-1" class="method"><code>fn <a href="#method.with_year-1" class="fnname">with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#873-875" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the year number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_year"><code>NaiveDate::with_year</code></a> method.</p>
<h1 id="example-23" class="section-header"><a href="#example-23">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_year</span>(<span class="number">2016</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_year</span>(<span class="op">-</span><span class="number">308</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
</div><h4 id="method.with_month-1" class="method"><code>fn <a href="#method.with_month-1" class="fnname">with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#895-897" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_month"><code>NaiveDate::with_month</code></a> method.</p>
<h1 id="example-24" class="section-header"><a href="#example-24">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">10</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">13</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">2</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre></div>
</div><h4 id="method.with_month0-1" class="method"><code>fn <a href="#method.with_month0-1" class="fnname">with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#917-919" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_month0"><code>NaiveDate::with_month0</code></a> method.</p>
<h1 id="example-25" class="section-header"><a href="#example-25">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">9</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">12</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">1</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre></div>
</div><h4 id="method.with_day-1" class="method"><code>fn <a href="#method.with_day-1" class="fnname">with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#938-940" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_day"><code>NaiveDate::with_day</code></a> method.</p>
<h1 id="example-26" class="section-header"><a href="#example-26">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day</span>(<span class="number">30</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day</span>(<span class="number">31</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre></div>
</div><h4 id="method.with_day0-1" class="method"><code>fn <a href="#method.with_day0-1" class="fnname">with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#959-961" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_day0"><code>NaiveDate::with_day0</code></a> method.</p>
<h1 id="example-27" class="section-header"><a href="#example-27">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day0</span>(<span class="number">29</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day0</span>(<span class="number">30</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre></div>
</div><h4 id="method.with_ordinal-1" class="method"><code>fn <a href="#method.with_ordinal-1" class="fnname">with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#987-989" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_ordinal"><code>NaiveDate::with_ordinal</code></a> method.</p>
<h1 id="example-28" class="section-header"><a href="#example-28">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">366</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">366</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
</div><h4 id="method.with_ordinal0-1" class="method"><code>fn <a href="#method.with_ordinal0-1" class="fnname">with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class="srclink" href="../src/chrono/naive/datetime.rs.html#1015-1017" title="goto source code">[src]</a></h4><div class="docblock"><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_ordinal0"><code>NaiveDate::with_ordinal0</code></a> method.</p>
<h1 id="example-29" class="section-header"><a href="#example-29">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">365</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">365</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
</div></div><h3 id="impl-Datelike-2" class="impl"><code class="in-band">impl&lt;Tz:&nbsp;<a class="trait" href="../chrono/offset/trait.TimeZone.html" title="trait chrono::offset::TimeZone">TimeZone</a>&gt; Datelike for <a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;</code><a href="#impl-Datelike-2" class="anchor"></a><a class="srclink" href="../src/chrono/date.rs.html#336-408" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.year-2" class="method hidden"><code>fn <a href="#method.year-2" class="fnname">year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class="srclink" href="../src/chrono/date.rs.html#338-340" title="goto source code">[src]</a></h4><h4 id="method.month-2" class="method hidden"><code>fn <a href="#method.month-2" class="fnname">month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/date.rs.html#342-344" title="goto source code">[src]</a></h4><h4 id="method.month0-2" class="method hidden"><code>fn <a href="#method.month0-2" class="fnname">month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/date.rs.html#346-348" title="goto source code">[src]</a></h4><h4 id="method.day-2" class="method hidden"><code>fn <a href="#method.day-2" class="fnname">day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/date.rs.html#350-352" title="goto source code">[src]</a></h4><h4 id="method.day0-2" class="method hidden"><code>fn <a href="#method.day0-2" class="fnname">day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/date.rs.html#354-356" title="goto source code">[src]</a></h4><h4 id="method.ordinal-2" class="method hidden"><code>fn <a href="#method.ordinal-2" class="fnname">ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/date.rs.html#358-360" title="goto source code">[src]</a></h4><h4 id="method.ordinal0-2" class="method hidden"><code>fn <a href="#method.ordinal0-2" class="fnname">ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/date.rs.html#362-364" title="goto source code">[src]</a></h4><h4 id="method.weekday-2" class="method hidden"><code>fn <a href="#method.weekday-2" class="fnname">weekday</a>(&amp;self) -&gt; <a class="enum" href="../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code><a class="srclink" href="../src/chrono/date.rs.html#366-368" title="goto source code">[src]</a></h4><h4 id="method.iso_week-2" class="method hidden"><code>fn <a href="#method.iso_week-2" class="fnname">iso_week</a>(&amp;self) -&gt; <a class="struct" href="../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code><a class="srclink" href="../src/chrono/date.rs.html#370-372" title="goto source code">[src]</a></h4><h4 id="method.with_year-2" class="method hidden"><code>fn <a href="#method.with_year-2" class="fnname">with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#375-377" title="goto source code">[src]</a></h4><h4 id="method.with_month-2" class="method hidden"><code>fn <a href="#method.with_month-2" class="fnname">with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#380-382" title="goto source code">[src]</a></h4><h4 id="method.with_month0-2" class="method hidden"><code>fn <a href="#method.with_month0-2" class="fnname">with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#385-387" title="goto source code">[src]</a></h4><h4 id="method.with_day-2" class="method hidden"><code>fn <a href="#method.with_day-2" class="fnname">with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#390-392" title="goto source code">[src]</a></h4><h4 id="method.with_day0-2" class="method hidden"><code>fn <a href="#method.with_day0-2" class="fnname">with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#395-397" title="goto source code">[src]</a></h4><h4 id="method.with_ordinal-2" class="method hidden"><code>fn <a href="#method.with_ordinal-2" class="fnname">with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#400-402" title="goto source code">[src]</a></h4><h4 id="method.with_ordinal0-2" class="method hidden"><code>fn <a href="#method.with_ordinal0-2" class="fnname">with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.Date.html" title="struct chrono::Date">Date</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/date.rs.html#405-407" title="goto source code">[src]</a></h4></div><h3 id="impl-Datelike-3" class="impl"><code class="in-band">impl&lt;Tz:&nbsp;<a class="trait" href="../chrono/offset/trait.TimeZone.html" title="trait chrono::offset::TimeZone">TimeZone</a>&gt; Datelike for <a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;</code><a href="#impl-Datelike-3" class="anchor"></a><a class="srclink" href="../src/chrono/datetime.rs.html#535-607" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.year-3" class="method hidden"><code>fn <a href="#method.year-3" class="fnname">year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#537-539" title="goto source code">[src]</a></h4><h4 id="method.month-3" class="method hidden"><code>fn <a href="#method.month-3" class="fnname">month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#541-543" title="goto source code">[src]</a></h4><h4 id="method.month0-3" class="method hidden"><code>fn <a href="#method.month0-3" class="fnname">month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#545-547" title="goto source code">[src]</a></h4><h4 id="method.day-3" class="method hidden"><code>fn <a href="#method.day-3" class="fnname">day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#549-551" title="goto source code">[src]</a></h4><h4 id="method.day0-3" class="method hidden"><code>fn <a href="#method.day0-3" class="fnname">day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#553-555" title="goto source code">[src]</a></h4><h4 id="method.ordinal-3" class="method hidden"><code>fn <a href="#method.ordinal-3" class="fnname">ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#557-559" title="goto source code">[src]</a></h4><h4 id="method.ordinal0-3" class="method hidden"><code>fn <a href="#method.ordinal0-3" class="fnname">ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#561-563" title="goto source code">[src]</a></h4><h4 id="method.weekday-3" class="method hidden"><code>fn <a href="#method.weekday-3" class="fnname">weekday</a>(&amp;self) -&gt; <a class="enum" href="../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#565-567" title="goto source code">[src]</a></h4><h4 id="method.iso_week-3" class="method hidden"><code>fn <a href="#method.iso_week-3" class="fnname">iso_week</a>(&amp;self) -&gt; <a class="struct" href="../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code><a class="srclink" href="../src/chrono/datetime.rs.html#569-571" title="goto source code">[src]</a></h4><h4 id="method.with_year-3" class="method hidden"><code>fn <a href="#method.with_year-3" class="fnname">with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#574-576" title="goto source code">[src]</a></h4><h4 id="method.with_month-3" class="method hidden"><code>fn <a href="#method.with_month-3" class="fnname">with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#579-581" title="goto source code">[src]</a></h4><h4 id="method.with_month0-3" class="method hidden"><code>fn <a href="#method.with_month0-3" class="fnname">with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#584-586" title="goto source code">[src]</a></h4><h4 id="method.with_day-3" class="method hidden"><code>fn <a href="#method.with_day-3" class="fnname">with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#589-591" title="goto source code">[src]</a></h4><h4 id="method.with_day0-3" class="method hidden"><code>fn <a href="#method.with_day0-3" class="fnname">with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#594-596" title="goto source code">[src]</a></h4><h4 id="method.with_ordinal-3" class="method hidden"><code>fn <a href="#method.with_ordinal-3" class="fnname">with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#599-601" title="goto source code">[src]</a></h4><h4 id="method.with_ordinal0-3" class="method hidden"><code>fn <a href="#method.with_ordinal0-3" class="fnname">with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a>&lt;Tz&gt;&gt;</code><a class="srclink" href="../src/chrono/datetime.rs.html#604-606" title="goto source code">[src]</a></h4></div></div><span class="loading-content">Loading content...</span><script type="text/javascript" src="../implementors/chrono/trait.Datelike.js" async></script></section><section id="search" class="content hidden"></section><section class="footer"></section><div id="rustdoc-vars" data-root-path="../" data-current-crate="chrono"></div>
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