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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="Defines any `GenericSequence` which can be lengthened or extended by appending or prepending an element to it."><title>Lengthen in generic_array::sequence - 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="generic_array" 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 trait"><!--[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="#">Lengthen</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../generic_array/index.html">generic_<wbr>array</a><span class="version">0.14.7</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Lengthen</a></h2><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Longer" title="Longer">Longer</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.append" title="append">append</a></li><li><a href="#tymethod.prepend" title="prepend">prepend</a></li></ul><h3><a href="#dyn-compatibility">Dyn Compatibility</a></h3><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In generic_<wbr>array::<wbr>sequence</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">generic_array</a>::<wbr><a href="index.html">sequence</a></div><h1>Trait <span class="trait">Lengthen</span> <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/generic_array/sequence.rs.html#111-146">Source</a> </span></div><pre class="rust item-decl"><code>pub unsafe trait Lengthen<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> + <a class="trait" href="trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T> {
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type <a href="#associatedtype.Longer" class="associatedtype">Longer</a>: <a class="trait" href="trait.Shorten.html" title="trait generic_array::sequence::Shorten">Shorten</a><T, Shorter = Self>;
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// Required methods
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fn <a href="#tymethod.append" class="fn">append</a>(self, last: T) -> Self::<a class="associatedtype" href="trait.Lengthen.html#associatedtype.Longer" title="type generic_array::sequence::Lengthen::Longer">Longer</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.prepend" class="fn">prepend</a>(self, first: T) -> Self::<a class="associatedtype" href="trait.Lengthen.html#associatedtype.Longer" title="type generic_array::sequence::Lengthen::Longer">Longer</a>;
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Defines any <code>GenericSequence</code> which can be lengthened or extended by appending
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or prepending an element to it.</p>
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<p>Any lengthened sequence can be shortened back to the original using <code>pop_front</code> or <code>pop_back</code></p>
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</div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.Longer" class="method"><a class="src rightside" href="../../src/generic_array/sequence.rs.html#113">Source</a><h4 class="code-header">type <a href="#associatedtype.Longer" class="associatedtype">Longer</a>: <a class="trait" href="trait.Shorten.html" title="trait generic_array::sequence::Shorten">Shorten</a><T, Shorter = Self></h4></section></summary><div class="docblock"><p><code>GenericSequence</code> that has one more element than <code>Self</code></p>
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</div></details></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.append" class="method"><a class="src rightside" href="../../src/generic_array/sequence.rs.html#129">Source</a><h4 class="code-header">fn <a href="#tymethod.append" class="fn">append</a>(self, last: T) -> Self::<a class="associatedtype" href="trait.Lengthen.html#associatedtype.Longer" title="type generic_array::sequence::Lengthen::Longer">Longer</a></h4></section></summary><div class="docblock"><p>Returns a new array with the given element appended to the end of it.</p>
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<p>Example:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = <span class="macro">arr!</span>[i32; <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
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<span class="kw">let </span>b = a.append(<span class="number">4</span>);
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<span class="macro">assert_eq!</span>(b, <span class="macro">arr!</span>[i32; <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>]);</code></pre></div></div></details><details class="toggle method-toggle" open><summary><section id="tymethod.prepend" class="method"><a class="src rightside" href="../../src/generic_array/sequence.rs.html#145">Source</a><h4 class="code-header">fn <a href="#tymethod.prepend" class="fn">prepend</a>(self, first: T) -> Self::<a class="associatedtype" href="trait.Lengthen.html#associatedtype.Longer" title="type generic_array::sequence::Lengthen::Longer">Longer</a></h4></section></summary><div class="docblock"><p>Returns a new array with the given element prepended to the front of it.</p>
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<p>Example:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = <span class="macro">arr!</span>[i32; <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
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<span class="kw">let </span>b = a.prepend(<span class="number">4</span>);
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<span class="macro">assert_eq!</span>(b, <span class="macro">arr!</span>[i32; <span class="number">4</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>]);</code></pre></div></div></details></div><h2 id="dyn-compatibility" class="section-header">Dyn Compatibility<a href="#dyn-compatibility" class="anchor">§</a></h2><div class="dyn-compatibility-info"><p>This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.93.1/reference/items/traits.html#dyn-compatibility">dyn compatible</a>.</p><p><i>In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.</i></p></div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><details class="toggle implementors-toggle"><summary><section id="impl-Lengthen%3CT%3E-for-GenericArray%3CT,+N%3E" class="impl"><a class="src rightside" href="../../src/generic_array/sequence.rs.html#190-230">Source</a><a href="#impl-Lengthen%3CT%3E-for-GenericArray%3CT,+N%3E" class="anchor">§</a><h3 class="code-header">impl<T, N> <a class="trait" href="trait.Lengthen.html" title="trait generic_array::sequence::Lengthen">Lengthen</a><T> for <a class="struct" href="../struct.GenericArray.html" title="struct generic_array::GenericArray">GenericArray</a><T, N><div class="where">where
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N: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="../../typenum/bit/struct.B1.html" title="struct typenum::bit::B1">B1</a>> + <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><T>,
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<a class="type" href="../../typenum/operator_aliases/type.Add1.html" title="type typenum::operator_aliases::Add1">Add1</a><N>: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><T> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a><<a class="struct" href="../../typenum/bit/struct.B1.html" title="struct typenum::bit::B1">B1</a>, Output = N>,
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<a class="type" href="../../typenum/operator_aliases/type.Sub1.html" title="type typenum::operator_aliases::Sub1">Sub1</a><<a class="type" href="../../typenum/operator_aliases/type.Add1.html" title="type typenum::operator_aliases::Add1">Add1</a><N>>: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><T>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Longer-1" class="associatedtype trait-impl"><a class="src rightside" href="../../src/generic_array/sequence.rs.html#197">Source</a><a href="#associatedtype.Longer-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Longer" class="associatedtype">Longer</a> = <a class="struct" href="../struct.GenericArray.html" title="struct generic_array::GenericArray">GenericArray</a><T, <N as <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a><<a class="struct" href="../../typenum/bit/struct.B1.html" title="struct typenum::bit::B1">B1</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.93.1/core/ops/arith/trait.Add.html#associatedtype.Output" title="type core::ops::arith::Add::Output">Output</a>></h4></section></div></details></div><script src="../../trait.impl/generic_array/sequence/trait.Lengthen.js" async></script></section></div></main></body></html> |