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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="A core struct representing a `Unicode BCP47 Language Identifier`."><title>LanguageIdentifier in icu_locale_core - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="icu_locale_core" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">LanguageIdentifier</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../icu_locale_core/index.html">icu_<wbr>locale_<wbr>core</a><span class="version">2.1.1</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Language<wbr>Identifier</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#ordering" title="Ordering">Ordering</a></li><li><a href="#parsing" title="Parsing">Parsing</a></li><li><a href="#serde" title="Serde">Serde</a></li><li><a href="#examples" title="Examples">Examples</a></li></ul><h3><a href="#fields">Fields</a></h3><ul class="block structfield"><li><a href="#structfield.language" title="language">language</a></li><li><a href="#structfield.region" title="region">region</a></li><li><a href="#structfield.script" title="script">script</a></li><li><a href="#structfield.variants" title="variants">variants</a></li></ul><h3><a href="#implementations">Associated Constants</a></h3><ul class="block associatedconstant"><li><a href="#associatedconstant.UNKNOWN" title="UNKNOWN">UNKNOWN</a></li></ul><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.is_unknown" title="is_unknown">is_unknown</a></li><li><a href="#method.normalizing_eq" title="normalizing_eq">normalizing_eq</a></li><li><a href="#method.strict_cmp" title="strict_cmp">strict_cmp</a></li><li><a href="#method.total_cmp" title="total_cmp">total_cmp</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-LanguageIdentifier" title="Clone">Clone</a></li><li><a href="#impl-Debug-for-LanguageIdentifier" title="Debug">Debug</a></li><li><a href="#impl-Display-for-LanguageIdentifier" title="Display">Display</a></li><li><a href="#impl-Eq-for-LanguageIdentifier" title="Eq">Eq</a></li><li><a href="#impl-From%3C%26LanguageIdentifier%3E-for-(Language,+Option%3CScript%3E,+Option%3CRegion%3E)" title="From&#60;&#38;LanguageIdentifier&#62;">From&#60;&#38;LanguageIdentifier&#62;</a></li><li><a href="#impl-From%3C%26LanguageIdentifier%3E-for-DataLocale" title="From&#60;&#38;LanguageIdentifier&#62;">From&#60;&#38;LanguageIdentifier&#62;</a></li><li><a href="#impl-From%3C%26LanguageIdentifier%3E-for-LocalePreferences" title="From&#60;&#38;LanguageIdentifier&#62;">From&#60;&#38;LanguageIdentifier&#62;</a></li><li><a href="#impl-From%3C(Language,+Option%3CScript%3E,+Option%3CRegion%3E)%3E-for-LanguageIdentifier" title="From&#60;(Language, Option&#60;Script&#62;, Option&#60;Region&#62;)&#62;">From&#60;(Language, Option&#60;Script&#62;, Option&#60;Region&#62;)&#62;</a></li><li><a href="#impl-From%3CLanguage%3E-for-LanguageIdentifier" title="From&#60;Language&#62;">From&#60;Language&#62;</a></li><li><a href="#impl-From%3CLanguageIdentifier%3E-for-DataLocale" title="From&#60;LanguageIdentifier&#62;">From&#60;LanguageIdentifier&#62;</a></li><li><a href="#impl-From%3CLanguageIdentifier%3E-for-Locale" title="From&#60;LanguageIdentifier&#62;">From&#60;LanguageIdentifier&#62;</a></li><li><a href="#impl-From%3CLocale%3E-for-LanguageIdentifier" title="From&#60;Locale&#62;">From&#60;Locale&#62;</a></li><li><a href="#impl-From%3COption%3CRegion%3E%3E-for-LanguageIdentifier" title="From&#60;Option&#60;Region&#62;&#62;">From&#60;Option&#60;Region&#62;&#62;</a></li><li><a href="#impl-From%3COption%3CScript%3E%3E-for-LanguageIdentifier" title="From&#60;Option&#60;Script&#62;&#62;">From&#60;Option&#60;Script&#62;&#62;</a></li><li><a href="#impl-Hash-for-LanguageIdentifier" title="Hash">Hash</a></li><li><a href="#impl-PartialEq-for-LanguageIdentifier" title="PartialEq">PartialEq</a></li><li><a href="#impl-StructuralPartialEq-for-LanguageIdentifier" title="StructuralPartialEq">StructuralPartialEq</a></li><li><a href="#impl-Writeable-for-LanguageIdentifier" title="Writeable">Writeable</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-LanguageIdentifier" title="Freeze">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-LanguageIdentifier" title="RefUnwindSafe">RefUnwindSafe</a></li><li><a href="#impl-Send-for-LanguageIdentifier" title="Send">Send</a></li><li><a href="#impl-Sync-for-LanguageIdentifier" title="Sync">Sync</a></li><li><a href="#impl-Unpin-for-LanguageIdentifier" title="Unpin">Unpin</a></li><li><a href="#impl-UnwindSafe-for-LanguageIdentifier" title="UnwindSafe">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow&#60;T&#62;">Borrow&#60;T&#62;</a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut&#60;T&#62;">BorrowMut&#60;T&#62;</a></li><li><a href="#impl-CloneToUninit-for-T" title="CloneToUninit">CloneToUninit</a></li><li><a href="#impl-From%3CT%3E-for-T" title="From&#60;T&#62;">From&#60;T&#62;</a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into&#60;U&#62;">Into&#60;U&#62;</a></li><li><a href="#impl-ToOwned-for-T" title="ToOwned">ToOwned</a></li><li><a href="#impl-ToString-for-T" title="ToString">ToString</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom&#60;U&#62;">TryFrom&#60;U&#62;</a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto&#60;U&#62;">TryInto&#60;U&#62;</a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate icu_<wbr>locale_<wbr>core</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="index.html">icu_locale_core</a></div><h1>Struct <span class="struct">Language<wbr>Identifier</span>&nbsp;<button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/icu_locale_core/langid.rs.html#88-97">Source</a> </span></div><pre class="rust item-decl"><code>pub struct LanguageIdentifier {
pub language: <a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a>,
pub script: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;,
pub region: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;,
pub variants: <a class="struct" href="subtags/struct.Variants.html" title="struct icu_locale_core::subtags::Variants">Variants</a>,
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A core struct representing a <a href="https://unicode.org/reports/tr35/tr35.html#Unicode_language_identifier"><code>Unicode BCP47 Language Identifier</code></a>.</p>
<h2 id="ordering"><a class="doc-anchor" href="#ordering">§</a>Ordering</h2>
<p>This type deliberately does not implement <code>Ord</code> or <code>PartialOrd</code> because there are
multiple possible orderings. Depending on your use case, two orderings are available:</p>
<ol>
<li>A string ordering, suitable for stable serialization: <a href="struct.LanguageIdentifier.html#method.strict_cmp" title="method icu_locale_core::LanguageIdentifier::strict_cmp"><code>LanguageIdentifier::strict_cmp</code></a></li>
<li>A struct ordering, suitable for use with a BTreeSet: <a href="struct.LanguageIdentifier.html#method.total_cmp" title="method icu_locale_core::LanguageIdentifier::total_cmp"><code>LanguageIdentifier::total_cmp</code></a></li>
</ol>
<p>See issue: <a href="https://github.com/unicode-org/icu4x/issues/1215">https://github.com/unicode-org/icu4x/issues/1215</a></p>
<h2 id="parsing"><a class="doc-anchor" href="#parsing">§</a>Parsing</h2>
<p>Unicode recognizes three levels of standard conformance for any language identifier:</p>
<ul>
<li><em>well-formed</em> - syntactically correct</li>
<li><em>valid</em> - well-formed and only uses registered language, region, script and variant subtags…</li>
<li><em>canonical</em> - valid and no deprecated codes or structure.</li>
</ul>
<p>At the moment parsing normalizes a well-formed language identifier converting
<code>_</code> separators to <code>-</code> and adjusting casing to conform to the Unicode standard.</p>
<p>Any syntactically invalid subtags will cause the parsing to fail with an error.</p>
<p>This operation normalizes syntax to be well-formed. No legacy subtag replacements is performed.
For validation and canonicalization, see <code>LocaleCanonicalizer</code>.</p>
<h2 id="serde"><a class="doc-anchor" href="#serde">§</a>Serde</h2>
<p>This type implements <code>serde::Serialize</code> and <code>serde::Deserialize</code> if the
<code>"serde"</code> Cargo feature is enabled on the crate.</p>
<p>The value will be serialized as a string and parsed when deserialized.
For tips on efficient storage and retrieval of locales, see <a href="zerovec/index.html" title="mod icu_locale_core::zerovec"><code>crate::zerovec</code></a>.</p>
<h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2>
<p>Simple example:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{
langid,
subtags::{language, region},
};
<span class="kw">let </span>li = <span class="macro">langid!</span>(<span class="string">"en-US"</span>);
<span class="macro">assert_eq!</span>(li.language, <span class="macro">language!</span>(<span class="string">"en"</span>));
<span class="macro">assert_eq!</span>(li.script, <span class="prelude-val">None</span>);
<span class="macro">assert_eq!</span>(li.region, <span class="prelude-val">Some</span>(<span class="macro">region!</span>(<span class="string">"US"</span>)));
<span class="macro">assert_eq!</span>(li.variants.len(), <span class="number">0</span>);</code></pre></div>
<p>More complex example:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{
langid,
subtags::{language, region, script, variant},
};
<span class="kw">let </span>li = <span class="macro">langid!</span>(<span class="string">"eN-latn-Us-Valencia"</span>);
<span class="macro">assert_eq!</span>(li.language, <span class="macro">language!</span>(<span class="string">"en"</span>));
<span class="macro">assert_eq!</span>(li.script, <span class="prelude-val">Some</span>(<span class="macro">script!</span>(<span class="string">"Latn"</span>)));
<span class="macro">assert_eq!</span>(li.region, <span class="prelude-val">Some</span>(<span class="macro">region!</span>(<span class="string">"US"</span>)));
<span class="macro">assert_eq!</span>(li.variants.first(), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="macro">variant!</span>(<span class="string">"valencia"</span>)));</code></pre></div></div></details><h2 id="fields" class="fields section-header">Fields<a href="#fields" class="anchor">§</a></h2><span id="structfield.language" class="structfield section-header"><a href="#structfield.language" class="anchor field">§</a><code>language: <a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a></code></span><div class="docblock"><p>Language subtag of the language identifier.</p>
</div><span id="structfield.script" class="structfield section-header"><a href="#structfield.script" class="anchor field">§</a><code>script: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;</code></span><div class="docblock"><p>Script subtag of the language identifier.</p>
</div><span id="structfield.region" class="structfield section-header"><a href="#structfield.region" class="anchor field">§</a><code>region: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;</code></span><div class="docblock"><p>Region subtag of the language identifier.</p>
</div><span id="structfield.variants" class="structfield section-header"><a href="#structfield.variants" class="anchor field">§</a><code>variants: <a class="struct" href="subtags/struct.Variants.html" title="struct icu_locale_core::subtags::Variants">Variants</a></code></span><div class="docblock"><p>Variant subtags of the language identifier.</p>
</div><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#99-508">Source</a><a href="#impl-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedconstant.UNKNOWN" class="associatedconstant"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#101">Source</a><h4 class="code-header">pub const <a href="#associatedconstant.UNKNOWN" class="constant">UNKNOWN</a>: Self</h4></section></summary><div class="docblock"><p>The unknown language identifier “und”.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_unknown" class="method"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#174-179">Source</a><h4 class="code-header">pub const fn <a href="#method.is_unknown" class="fn">is_unknown</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Whether this <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> equals <a href="struct.LanguageIdentifier.html#associatedconstant.UNKNOWN" title="associated constant icu_locale_core::LanguageIdentifier::UNKNOWN"><code>LanguageIdentifier::UNKNOWN</code></a>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.strict_cmp" class="method"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#276-278">Source</a><h4 class="code-header">pub fn <a href="#method.strict_cmp" class="fn">strict_cmp</a>(&amp;self, other: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>]) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></h4></section></summary><div class="docblock"><p>Compare this <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> with BCP-47 bytes.</p>
<p>The return value is equivalent to what would happen if you first converted this
<a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> to a BCP-47 string and then performed a byte comparison.</p>
<p>This function is case-sensitive and results in a <em>total order</em>, so it is appropriate for
binary search. The only argument producing <a href="https://doc.rust-lang.org/1.93.1/core/cmp/enum.Ordering.html#variant.Equal" title="variant core::cmp::Ordering::Equal"><code>Ordering::Equal</code></a> is <code>self.to_string()</code>.</p>
<h5 id="examples-1"><a class="doc-anchor" href="#examples-1">§</a>Examples</h5>
<p>Sorting a list of langids with this method requires converting one of them to a string:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::LanguageIdentifier;
<span class="kw">use </span>std::cmp::Ordering;
<span class="kw">use </span>writeable::Writeable;
<span class="comment">// Random input order:
</span><span class="kw">let </span>bcp47_strings: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str] = <span class="kw-2">&amp;</span>[
<span class="string">"ar-Latn"</span>,
<span class="string">"zh-Hant-TW"</span>,
<span class="string">"zh-TW"</span>,
<span class="string">"und-fonipa"</span>,
<span class="string">"zh-Hant"</span>,
<span class="string">"ar-SA"</span>,
];
<span class="kw">let </span><span class="kw-2">mut </span>langids = bcp47_strings
.iter()
.map(|s| s.parse().unwrap())
.collect::&lt;Vec&lt;LanguageIdentifier&gt;&gt;();
langids.sort_by(|a, b| {
<span class="kw">let </span>b = b.write_to_string();
a.strict_cmp(b.as_bytes())
});
<span class="kw">let </span>strict_cmp_strings = langids
.iter()
.map(|l| l.to_string())
.collect::&lt;Vec&lt;String&gt;&gt;();
<span class="comment">// Output ordering, sorted alphabetically
</span><span class="kw">let </span>expected_ordering: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str] = <span class="kw-2">&amp;</span>[
<span class="string">"ar-Latn"</span>,
<span class="string">"ar-SA"</span>,
<span class="string">"und-fonipa"</span>,
<span class="string">"zh-Hant"</span>,
<span class="string">"zh-Hant-TW"</span>,
<span class="string">"zh-TW"</span>,
];
<span class="macro">assert_eq!</span>(expected_ordering, strict_cmp_strings);</code></pre></div></div></details><details class="toggle method-toggle" open><summary><section id="method.total_cmp" class="method"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#365-367">Source</a><h4 class="code-header">pub fn <a href="#method.total_cmp" class="fn">total_cmp</a>(&amp;self, other: &amp;Self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></h4></section></summary><div class="docblock"><p>Compare this <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> with another <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> field-by-field.
The result is a total ordering sufficient for use in a <a href="alloc::collections::BTreeSet"><code>BTreeSet</code></a>.</p>
<p>Unlike <a href="struct.LanguageIdentifier.html#method.strict_cmp" title="method icu_locale_core::LanguageIdentifier::strict_cmp"><code>LanguageIdentifier::strict_cmp</code></a>, the ordering may or may not be equivalent
to string ordering, and it may or may not be stable across ICU4X releases.</p>
<h5 id="examples-2"><a class="doc-anchor" href="#examples-2">§</a>Examples</h5>
<p>This method returns a nonsensical ordering derived from the fields of the struct:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::LanguageIdentifier;
<span class="kw">use </span>std::cmp::Ordering;
<span class="comment">// Input strings, sorted alphabetically
</span><span class="kw">let </span>bcp47_strings: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str] = <span class="kw-2">&amp;</span>[
<span class="string">"ar-Latn"</span>,
<span class="string">"ar-SA"</span>,
<span class="string">"und-fonipa"</span>,
<span class="string">"zh-Hant"</span>,
<span class="string">"zh-Hant-TW"</span>,
<span class="string">"zh-TW"</span>,
];
<span class="macro">assert!</span>(bcp47_strings.windows(<span class="number">2</span>).all(|w| w[<span class="number">0</span>] &lt; w[<span class="number">1</span>]));
<span class="kw">let </span><span class="kw-2">mut </span>langids = bcp47_strings
.iter()
.map(|s| s.parse().unwrap())
.collect::&lt;Vec&lt;LanguageIdentifier&gt;&gt;();
langids.sort_by(LanguageIdentifier::total_cmp);
<span class="kw">let </span>total_cmp_strings = langids
.iter()
.map(|l| l.to_string())
.collect::&lt;Vec&lt;String&gt;&gt;();
<span class="comment">// Output ordering, sorted arbitrarily
</span><span class="kw">let </span>expected_ordering: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str] = <span class="kw-2">&amp;</span>[
<span class="string">"ar-SA"</span>,
<span class="string">"ar-Latn"</span>,
<span class="string">"und-fonipa"</span>,
<span class="string">"zh-TW"</span>,
<span class="string">"zh-Hant"</span>,
<span class="string">"zh-Hant-TW"</span>,
];
<span class="macro">assert_eq!</span>(expected_ordering, total_cmp_strings);</code></pre></div>
<p>Use a wrapper to add a <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> to a <a href="alloc::collections::BTreeSet"><code>BTreeSet</code></a>:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::LanguageIdentifier;
<span class="kw">use </span>std::cmp::Ordering;
<span class="kw">use </span>std::collections::BTreeSet;
<span class="attr">#[derive(PartialEq, Eq)]
</span><span class="kw">struct </span>LanguageIdentifierTotalOrd(LanguageIdentifier);
<span class="kw">impl </span>Ord <span class="kw">for </span>LanguageIdentifierTotalOrd {
<span class="kw">fn </span>cmp(<span class="kw-2">&amp;</span><span class="self">self</span>, other: <span class="kw-2">&amp;</span><span class="self">Self</span>) -&gt; Ordering {
<span class="self">self</span>.<span class="number">0</span>.total_cmp(<span class="kw-2">&amp;</span>other.<span class="number">0</span>)
}
}
<span class="kw">impl </span>PartialOrd <span class="kw">for </span>LanguageIdentifierTotalOrd {
<span class="kw">fn </span>partial_cmp(<span class="kw-2">&amp;</span><span class="self">self</span>, other: <span class="kw-2">&amp;</span><span class="self">Self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;Ordering&gt; {
<span class="prelude-val">Some</span>(<span class="self">self</span>.cmp(other))
}
}
<span class="kw">let _</span>: BTreeSet&lt;LanguageIdentifierTotalOrd&gt; = <span class="macro">unimplemented!</span>();</code></pre></div></div></details><details class="toggle method-toggle" open><summary><section id="method.normalizing_eq" class="method"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#392-422">Source</a><h4 class="code-header">pub fn <a href="#method.normalizing_eq" class="fn">normalizing_eq</a>(&amp;self, other: &amp;<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.str.html">str</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Compare this <code>LanguageIdentifier</code> with a potentially unnormalized BCP-47 string.</p>
<p>The return value is equivalent to what would happen if you first parsed the
BCP-47 string to a <code>LanguageIdentifier</code> and then performed a structural comparison.</p>
<h5 id="examples-3"><a class="doc-anchor" href="#examples-3">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::LanguageIdentifier;
<span class="kw">let </span>bcp47_strings: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str] = <span class="kw-2">&amp;</span>[
<span class="string">"pl-LaTn-pL"</span>,
<span class="string">"uNd"</span>,
<span class="string">"UnD-adlm"</span>,
<span class="string">"uNd-GB"</span>,
<span class="string">"UND-FONIPA"</span>,
<span class="string">"ZH"</span>,
];
<span class="kw">for </span>a <span class="kw">in </span>bcp47_strings {
<span class="macro">assert!</span>(a.parse::&lt;LanguageIdentifier&gt;().unwrap().normalizing_eq(a));
}</code></pre></div></div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#impl-Clone-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&amp;self) -&gt; <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h4></section></summary><div class='docblock'>Returns a duplicate of the value. <a href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.93.1/src/core/clone.rs.html#245-247">Source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&amp;mut self, source: &amp;Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#510-514">Source</a><a href="#impl-Debug-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#511-513">Source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.93.1/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.93.1/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Display-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#527">Source</a><a href="#impl-Display-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3><div class="docblock"><p>This trait is implemented for compatibility with <a href="alloc::fmt"><code>fmt!</code></a>.
To create a string, [<code>Writeable::write_to_string</code>] is usually more efficient.</p>
</div></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#527">Source</a><a href="#method.fmt-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Display.html#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.93.1/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.93.1/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3C%26LanguageIdentifier%3E-for-(Language,+Option%3CScript%3E,+Option%3CRegion%3E)" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#671-681">Source</a><a href="#impl-From%3C%26LanguageIdentifier%3E-for-(Language,+Option%3CScript%3E,+Option%3CRegion%3E)" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;&amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>&gt; for (<a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a>, <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;, <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;)</h3><div class="docblock"><p>Convert from a <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a> to an LSR tuple.</p>
</div></section></summary><div class="docblock"><h4 id="examples-8"><a class="doc-anchor" href="#examples-8">§</a>Examples</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{
langid,
subtags::{language, region, script},
};
<span class="kw">let </span>lid = <span class="macro">langid!</span>(<span class="string">"en-Latn-US"</span>);
<span class="kw">let </span>(lang, script, region) = (<span class="kw-2">&amp;</span>lid).into();
<span class="macro">assert_eq!</span>(lang, <span class="macro">language!</span>(<span class="string">"en"</span>));
<span class="macro">assert_eq!</span>(script, <span class="prelude-val">Some</span>(<span class="macro">script!</span>(<span class="string">"Latn"</span>)));
<span class="macro">assert_eq!</span>(region, <span class="prelude-val">Some</span>(<span class="macro">region!</span>(<span class="string">"US"</span>)));</code></pre></div></div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-6" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#678-680">Source</a><a href="#method.from-6" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(langid: &amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3C%26LanguageIdentifier%3E-for-DataLocale" class="impl"><a class="src rightside" href="../src/icu_locale_core/data.rs.html#118-128">Source</a><a href="#impl-From%3C%26LanguageIdentifier%3E-for-DataLocale" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;&amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>&gt; for <a class="struct" href="struct.DataLocale.html" title="struct icu_locale_core::DataLocale">DataLocale</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-1" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/data.rs.html#119-127">Source</a><a href="#method.from-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(langid: &amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3C%26LanguageIdentifier%3E-for-LocalePreferences" class="impl"><a class="src rightside" href="../src/icu_locale_core/preferences/locale.rs.html#89-100">Source</a><a href="#impl-From%3C%26LanguageIdentifier%3E-for-LocalePreferences" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;&amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>&gt; for <a class="struct" href="preferences/struct.LocalePreferences.html" title="struct icu_locale_core::preferences::LocalePreferences">LocalePreferences</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-9" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/preferences/locale.rs.html#90-99">Source</a><a href="#method.from-9" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(lid: &amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3C(Language,+Option%3CScript%3E,+Option%3CRegion%3E)%3E-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#631-652">Source</a><a href="#impl-From%3C(Language,+Option%3CScript%3E,+Option%3CRegion%3E)%3E-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;(<a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a>, <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;, <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;)&gt; for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3><div class="docblock"><p>Convert from an LSR tuple to a <a href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier"><code>LanguageIdentifier</code></a>.</p>
</div></section></summary><div class="docblock"><h4 id="examples-7"><a class="doc-anchor" href="#examples-7">§</a>Examples</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{
langid,
subtags::{language, region, script},
LanguageIdentifier,
};
<span class="kw">let </span>lang = <span class="macro">language!</span>(<span class="string">"en"</span>);
<span class="kw">let </span>script = <span class="macro">script!</span>(<span class="string">"Latn"</span>);
<span class="kw">let </span>region = <span class="macro">region!</span>(<span class="string">"US"</span>);
<span class="macro">assert_eq!</span>(
LanguageIdentifier::from((lang, <span class="prelude-val">Some</span>(script), <span class="prelude-val">Some</span>(region))),
<span class="macro">langid!</span>(<span class="string">"en-Latn-US"</span>)
);</code></pre></div></div><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-5" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#638-651">Source</a><a href="#method.from-5" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(lsr: (<a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a>, <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;, <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;)) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CLanguage%3E-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#559-568">Source</a><a href="#impl-From%3CLanguage%3E-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a>&gt; for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3><div class="docblock"><h4 id="examples-4"><a class="doc-anchor" href="#examples-4">§</a>Examples</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{langid, subtags::language, LanguageIdentifier};
<span class="macro">assert_eq!</span>(LanguageIdentifier::from(<span class="macro">language!</span>(<span class="string">"en"</span>)), <span class="macro">langid!</span>(<span class="string">"en"</span>));</code></pre></div></div></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-2" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#560-567">Source</a><a href="#method.from-2" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(language: <a class="struct" href="subtags/struct.Language.html" title="struct icu_locale_core::subtags::Language">Language</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CLanguageIdentifier%3E-for-DataLocale" class="impl"><a class="src rightside" href="../src/icu_locale_core/data.rs.html#106-110">Source</a><a href="#impl-From%3CLanguageIdentifier%3E-for-DataLocale" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>&gt; for <a class="struct" href="struct.DataLocale.html" title="struct icu_locale_core::DataLocale">DataLocale</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/data.rs.html#107-109">Source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(langid: <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CLanguageIdentifier%3E-for-Locale" class="impl"><a class="src rightside" href="../src/icu_locale_core/locale.rs.html#485-492">Source</a><a href="#impl-From%3CLanguageIdentifier%3E-for-Locale" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>&gt; for <a class="struct" href="struct.Locale.html" title="struct icu_locale_core::Locale">Locale</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-7" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/locale.rs.html#486-491">Source</a><a href="#method.from-7" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(id: <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CLocale%3E-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/locale.rs.html#494-498">Source</a><a href="#impl-From%3CLocale%3E-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="struct.Locale.html" title="struct icu_locale_core::Locale">Locale</a>&gt; for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-8" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/locale.rs.html#495-497">Source</a><a href="#method.from-8" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(loc: <a class="struct" href="struct.Locale.html" title="struct icu_locale_core::Locale">Locale</a>) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3COption%3CRegion%3E%3E-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#601-610">Source</a><a href="#impl-From%3COption%3CRegion%3E%3E-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;&gt; for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3><div class="docblock"><h4 id="examples-6"><a class="doc-anchor" href="#examples-6">§</a>Examples</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{langid, subtags::region, LanguageIdentifier};
<span class="macro">assert_eq!</span>(
LanguageIdentifier::from(<span class="prelude-val">Some</span>(<span class="macro">region!</span>(<span class="string">"US"</span>))),
<span class="macro">langid!</span>(<span class="string">"und-US"</span>)
);</code></pre></div></div></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-4" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#602-609">Source</a><a href="#method.from-4" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(region: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Region.html" title="struct icu_locale_core::subtags::Region">Region</a>&gt;) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3COption%3CScript%3E%3E-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#580-589">Source</a><a href="#impl-From%3COption%3CScript%3E%3E-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;&gt; for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3><div class="docblock"><h4 id="examples-5"><a class="doc-anchor" href="#examples-5">§</a>Examples</h4>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>icu::locale::{langid, subtags::script, LanguageIdentifier};
<span class="macro">assert_eq!</span>(
LanguageIdentifier::from(<span class="prelude-val">Some</span>(<span class="macro">script!</span>(<span class="string">"latn"</span>))),
<span class="macro">langid!</span>(<span class="string">"und-Latn"</span>)
);</code></pre></div></div></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-3" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#581-588">Source</a><a href="#method.from-3" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(script: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="subtags/struct.Script.html" title="struct icu_locale_core::subtags::Script">Script</a>&gt;) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Hash-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#impl-Hash-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.hash" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#method.hash" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hash.html#tymethod.hash" class="fn">hash</a>&lt;__H: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>&gt;(&amp;self, state: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;mut __H</a>)</h4></section></summary><div class='docblock'>Feeds this value into the given <a href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hasher.html" title="trait core::hash::Hasher"><code>Hasher</code></a>. <a href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hash.html#tymethod.hash">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.hash_slice" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.3.0">1.3.0</span> · <a class="src" href="https://doc.rust-lang.org/1.93.1/src/core/hash/mod.rs.html#235-237">Source</a></span><a href="#method.hash_slice" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hash.html#method.hash_slice" class="fn">hash_slice</a>&lt;H&gt;(data: &amp;[Self], state: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;mut H</a>)<div class="where">where
H: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Feeds a slice of this type into the given <a href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hasher.html" title="trait core::hash::Hasher"><code>Hasher</code></a>. <a href="https://doc.rust-lang.org/1.93.1/core/hash/trait.Hash.html#method.hash_slice">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-PartialEq-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#impl-PartialEq-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.eq" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#method.eq" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/cmp/trait.PartialEq.html#tymethod.eq" class="fn">eq</a>(&amp;self, other: &amp;<a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.ne" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.93.1/src/core/cmp.rs.html#264">Source</a></span><a href="#method.ne" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/cmp/trait.PartialEq.html#method.ne" class="fn">ne</a>(&amp;self, other: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;Rhs</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests for <code>!=</code>. The default implementation is almost always sufficient,
and should not be overridden without very good reason.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Writeable-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#527">Source</a><a href="#impl-Writeable-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="../writeable/trait.Writeable.html" title="trait writeable::Writeable">Writeable</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.write_to" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#527">Source</a><a href="#method.write_to" class="anchor">§</a><h4 class="code-header">fn <a href="../writeable/trait.Writeable.html#method.write_to" class="fn">write_to</a>&lt;W: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Write.html" title="trait core::fmt::Write">Write</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt;(&amp;self, sink: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;mut W</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/1.93.1/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Writes a string to the given sink. Errors from the sink are bubbled up.
The default implementation delegates to <code>write_to_parts</code>, and discards any
<code>Part</code> annotations.</div></details><details class="toggle method-toggle" open><summary><section id="method.writeable_length_hint" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#527">Source</a><a href="#method.writeable_length_hint" class="anchor">§</a><h4 class="code-header">fn <a href="../writeable/trait.Writeable.html#method.writeable_length_hint" class="fn">writeable_length_hint</a>(&amp;self) -&gt; <a class="struct" href="../writeable/struct.LengthHint.html" title="struct writeable::LengthHint">LengthHint</a></h4></section></summary><div class='docblock'>Returns a hint for the number of UTF-8 bytes that will be written to the sink. <a href="../writeable/trait.Writeable.html#method.writeable_length_hint">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.writeable_borrow" class="method trait-impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#527">Source</a><a href="#method.writeable_borrow" class="anchor">§</a><h4 class="code-header">fn <a href="../writeable/trait.Writeable.html#method.writeable_borrow" class="fn">writeable_borrow</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.str.html">str</a>&gt;</h4></section></summary><div class='docblock'>Returns a <code>&amp;str</code> that matches the output of <code>write_to</code>, if possible. <a href="../writeable/trait.Writeable.html#method.writeable_borrow">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.write_to_parts" class="method trait-impl"><a class="src rightside" href="../src/writeable/lib.rs.html#275">Source</a><a href="#method.write_to_parts" class="anchor">§</a><h4 class="code-header">fn <a href="../writeable/trait.Writeable.html#method.write_to_parts" class="fn">write_to_parts</a>&lt;S&gt;(&amp;self, sink: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;mut S</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/1.93.1/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>&gt;<div class="where">where
S: <a class="trait" href="../writeable/trait.PartsWrite.html" title="trait writeable::PartsWrite">PartsWrite</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Write bytes and <code>Part</code> annotations to the given sink. Errors from the
sink are bubbled up. The default implementation delegates to <code>write_to</code>,
and doesn’t produce any <code>Part</code> annotations.</div></details></div></details><section id="impl-Eq-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#impl-Eq-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section><section id="impl-StructuralPartialEq-for-LanguageIdentifier" class="impl"><a class="src rightside" href="../src/icu_locale_core/langid.rs.html#86">Source</a><a href="#impl-StructuralPartialEq-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.StructuralPartialEq.html" title="trait core::marker::StructuralPartialEq">StructuralPartialEq</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-LanguageIdentifier" class="impl"><a href="#impl-Freeze-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section><section id="impl-RefUnwindSafe-for-LanguageIdentifier" class="impl"><a href="#impl-RefUnwindSafe-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section><section id="impl-Send-for-LanguageIdentifier" class="impl"><a href="#impl-Send-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section><section id="impl-Sync-for-LanguageIdentifier" class="impl"><a href="#impl-Sync-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section><section id="impl-Unpin-for-LanguageIdentifier" class="impl"><a href="#impl-Unpin-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section><section id="impl-UnwindSafe-for-LanguageIdentifier" class="impl"><a href="#impl-UnwindSafe-for-LanguageIdentifier" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.LanguageIdentifier.html" title="struct icu_locale_core::LanguageIdentifier">LanguageIdentifier</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/any.rs.html#138">Source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/any.rs.html#139">Source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/1.93.1/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.93.1/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/borrow.rs.html#212">Source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/borrow.rs.html#214">Source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.93.1/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/borrow.rs.html#221">Source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/borrow.rs.html#222">Source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.93.1/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-CloneToUninit-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/clone.rs.html#547">Source</a><a href="#impl-CloneToUninit-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/clone/trait.CloneToUninit.html" title="trait core::clone::CloneToUninit">CloneToUninit</a> for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone_to_uninit" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/clone.rs.html#549">Source</a><a href="#method.clone_to_uninit" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="https://doc.rust-lang.org/1.93.1/core/clone/trait.CloneToUninit.html#tymethod.clone_to_uninit" class="fn">clone_to_uninit</a>(&amp;self, dest: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.pointer.html">*mut </a><a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>clone_to_uninit</code>)</span></div></span><div class='docblock'>Performs copy-assignment from <code>self</code> to <code>dest</code>. <a href="https://doc.rust-lang.org/1.93.1/core/clone/trait.CloneToUninit.html#tymethod.clone_to_uninit">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#785">Source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-10" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#788">Source</a><a href="#method.from-10" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -&gt; T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#767-769">Source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#777">Source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -&gt; U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for U</code> chooses to do.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToOwned-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/alloc/borrow.rs.html#85-87">Source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/alloc/borrow.rs.html#89">Source</a><a href="#associatedtype.Owned" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.93.1/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/alloc/borrow.rs.html#90">Source</a><a href="#method.to_owned" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&amp;self) -&gt; T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.93.1/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/alloc/borrow.rs.html#94">Source</a><a href="#method.clone_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&amp;self, target: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&amp;mut T</a>)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/1.93.1/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToString-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/alloc/string.rs.html#2864">Source</a><a href="#impl-ToString-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.to_string" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/alloc/string.rs.html#2866">Source</a><a href="#method.to_string" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/alloc/string/trait.ToString.html#tymethod.to_string" class="fn">to_string</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/1.93.1/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></summary><div class='docblock'>Converts the given value to a <code>String</code>. <a href="https://doc.rust-lang.org/1.93.1/alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#827-829">Source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#831">Source</a><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#834">Source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#811-813">Source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#815">Source</a><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.93.1/src/core/convert/mod.rs.html#818">Source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html>
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