180 lines
8.3 KiB
HTML
180 lines
8.3 KiB
HTML
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<!DOCTYPE html>
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `date` mod in crate `chrono`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, date">
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<title>chrono::naive::date - Rust</title>
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<link rel="stylesheet" type="text/css" href="../../../normalize.css">
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<body class="rustdoc mod">
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This old browser is unsupported and will most likely display funky
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things.
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<![endif]-->
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<nav class="sidebar">
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<p class='location'>Module date</p><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#constants">Constants</a></li></ul></div><p class='location'><a href='../../index.html'>chrono</a>::<wbr><a href='../index.html'>naive</a></p><script>window.sidebarCurrent = {name: 'date', ty: 'mod', relpath: '../'};</script><script defer src="../sidebar-items.js"></script>
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<input class="search-input" name="search"
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autocomplete="off"
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placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
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type="search">
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</form>
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</nav>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Module <a href='../../index.html'>chrono</a>::<wbr><a href='../index.html'>naive</a>::<wbr><a class="mod" href=''>date</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../../src/chrono/naive/date.rs.html#5-2805' title='goto source code'>[src]</a></span></h1>
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<div class='docblock'><p>ISO 8601 calendar date without timezone.</p>
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<h1 id='calendar-date' class='section-header'><a href='#calendar-date'>Calendar Date</a></h1>
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<p>The ISO 8601 <strong>calendar date</strong> follows the proleptic Gregorian calendar.
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It is like a normal civil calendar but note some slight differences:</p>
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<ul>
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<li><p>Dates before the Gregorian calendar's inception in 1582 are defined via the extrapolation.
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Be careful, as historical dates are often noted in the Julian calendar and others
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and the transition to Gregorian may differ across countries (as late as early 20C).</p>
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<p>(Some example: Both Shakespeare from Britain and Cervantes from Spain seemingly died
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on the same calendar date---April 23, 1616---but in the different calendar.
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Britain used the Julian calendar at that time, so Shakespeare's death is later.)</p></li>
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<li><p>ISO 8601 calendars has the year 0, which is 1 BCE (a year before 1 CE).
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If you need a typical BCE/BC and CE/AD notation for year numbers,
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use the <a href="../../trait.Datelike.html#method.year_ce"><code>Datelike::year_ce</code></a> method.</p></li>
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</ul>
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<h1 id='week-date' class='section-header'><a href='#week-date'>Week Date</a></h1>
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<p>The ISO 8601 <strong>week date</strong> is a triple of year number, week number
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and <a href="../../enum.Weekday.html">day of the week</a> with the following rules:</p>
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<ul>
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<li><p>A week consists of Monday through Sunday, and is always numbered within some year.
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The week number ranges from 1 to 52 or 53 depending on the year.</p></li>
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<li><p>The week 1 of given year is defined as the first week containing January 4 of that year,
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or equivalently, the first week containing four or more days in that year.</p></li>
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<li><p>The year number in the week date may <em>not</em> correspond to the actual Gregorian year.
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For example, January 3, 2016 (Sunday) was on the last (53rd) week of 2015.</p></li>
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</ul>
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<p>Chrono's date types default to the ISO 8601 <a href="#calendar-date">calendar date</a>,
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but the <a href="../../trait.Datelike.html#tymethod.isoweekdate"><code>Datelike::isoweekdate</code></a> method
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can be used to get the corresponding week date.</p>
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<h1 id='ordinal-date' class='section-header'><a href='#ordinal-date'>Ordinal Date</a></h1>
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<p>The ISO 8601 <strong>ordinal date</strong> is a pair of year number and day of the year ("ordinal").
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The ordinal number ranges from 1 to 365 or 366 depending on the year.
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The year number is same to that of the <a href="#calendar-date">calendar date</a>.</p>
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<p>This is currently the internal format of Chrono's date types.</p>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.NaiveDate.html"
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title='struct chrono::naive::date::NaiveDate'>NaiveDate</a></td>
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<td class='docblock-short'>
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<p>ISO 8601 calendar date without timezone.
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Allows for every <a href="./index.html#calendar-date">proleptic Gregorian date</a>
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from Jan 1, 262145 BCE to Dec 31, 262143 CE.
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Also supports the conversion from ISO 8601 ordinal and week date.</p>
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</td>
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</tr></table><h2 id='constants' class='section-header'><a href="#constants">Constants</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="constant" href="constant.MAX.html"
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title='constant chrono::naive::date::MAX'>MAX</a></td>
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<td class='docblock-short'>
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<p>The maximum possible <code>NaiveDate</code> (December 31, 262143 CE).</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="constant" href="constant.MIN.html"
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title='constant chrono::naive::date::MIN'>MIN</a></td>
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<td class='docblock-short'>
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<p>The minimum possible <code>NaiveDate</code> (January 1, 262145 BCE).</p>
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</td>
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</tr></table></section>
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