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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 functional programming methods for generic sequences"><meta name="keywords" content="rust, rustlang, rust-lang, FunctionalSequence"><title>FunctionalSequence in generic_array::functional - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script src="../../crates.js"></script><script defer src="../../main.js"></script>
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</a><h2 class="location"><a href="#">FunctionalSequence</a></h2><div class="sidebar-elems"><section><div class="block"><h3 class="sidebar-title"><a href="#provided-methods">Provided Methods</a></h3><ul><li><a href="#method.fold">fold</a></li><li><a href="#method.map">map</a></li><li><a href="#method.zip">zip</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul><li><a href="#impl-FunctionalSequence%3CT%3E-for-%26%27a%20S">&'a S</a></li><li><a href="#impl-FunctionalSequence%3CT%3E-for-%26%27a%20mut%20S">&'a mut S</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#implementors">Implementors</a></h3></div></section><h2 class="location"><a href="index.html">In generic_array::functional</a></h2><div id="sidebar-vars" data-name="FunctionalSequence" data-ty="trait" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../generic_array/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><nav class="sub"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="22" height="22" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="main-heading">
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<h1 class="fqn"><span class="in-band">Trait <a href="../index.html">generic_array</a>::<wbr><a href="index.html">functional</a>::<wbr><a class="trait" href="#">FunctionalSequence</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../../src/generic_array/functional.rs.html#43-83">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="docblock item-decl"><pre class="rust trait"><code>pub unsafe trait FunctionalSequence<T>: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T> {
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fn <a href="#method.map" class="fnname">map</a><U, F>(self, f: F) -> <a class="type" href="type.MappedSequence.html" title="type generic_array::functional::MappedSequence">MappedSequence</a><Self, T, U><br> <span class="where">where<br> Self: <a class="trait" href="trait.MappedGenericSequence.html" title="trait generic_array::functional::MappedGenericSequence">MappedGenericSequence</a><T, U>,<br> Self::<a class="associatedtype" href="../sequence/trait.GenericSequence.html#associatedtype.Length" title="type generic_array::sequence::GenericSequence::Length">Length</a>: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><U>,<br> F: <a class="trait" href="https://doc.rust-lang.org/1.61.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>) -> U</span>,
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{ ... }
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<span class="item-spacer"></span> fn <a href="#method.zip" class="fnname">zip</a><B, Rhs, U, F>(self, rhs: Rhs, f: F) -> <a class="type" href="type.MappedSequence.html" title="type generic_array::functional::MappedSequence">MappedSequence</a><Self, T, U><br> <span class="where">where<br> Self: <a class="trait" href="trait.MappedGenericSequence.html" title="trait generic_array::functional::MappedGenericSequence">MappedGenericSequence</a><T, U>,<br> Rhs: <a class="trait" href="trait.MappedGenericSequence.html" title="trait generic_array::functional::MappedGenericSequence">MappedGenericSequence</a><B, U, Mapped = <a class="type" href="type.MappedSequence.html" title="type generic_array::functional::MappedSequence">MappedSequence</a><Self, T, U>>,<br> Self::<a class="associatedtype" href="../sequence/trait.GenericSequence.html#associatedtype.Length" title="type generic_array::sequence::GenericSequence::Length">Length</a>: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><B> + <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><U>,<br> Rhs: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><B, Length = Self::<a class="associatedtype" href="../sequence/trait.GenericSequence.html#associatedtype.Length" title="type generic_array::sequence::GenericSequence::Length">Length</a>>,<br> F: <a class="trait" href="https://doc.rust-lang.org/1.61.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>, Rhs::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>) -> U</span>,
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{ ... }
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<span class="item-spacer"></span> fn <a href="#method.fold" class="fnname">fold</a><U, F>(self, init: U, f: F) -> U<br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/1.61.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(U, Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>) -> U</span>,
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{ ... }
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}</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Defines functional programming methods for generic sequences</p>
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</div></details><h2 id="provided-methods" class="small-section-header">Provided methods<a href="#provided-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle" open><summary><div id="method.map" class="method has-srclink"><div class="rightside"><a class="srclink" href="../../src/generic_array/functional.rs.html#48-55">source</a></div><h4 class="code-header">fn <a href="#method.map" class="fnname">map</a><U, F>(self, f: F) -> <a class="type" href="type.MappedSequence.html" title="type generic_array::functional::MappedSequence">MappedSequence</a><Self, T, U> <span class="where fmt-newline">where<br> Self: <a class="trait" href="trait.MappedGenericSequence.html" title="trait generic_array::functional::MappedGenericSequence">MappedGenericSequence</a><T, U>,<br> Self::<a class="associatedtype" href="../sequence/trait.GenericSequence.html#associatedtype.Length" title="type generic_array::sequence::GenericSequence::Length">Length</a>: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><U>,<br> F: <a class="trait" href="https://doc.rust-lang.org/1.61.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>) -> U, </span></h4></div></summary><div class="docblock"><p>Maps a <code>GenericSequence</code> to another <code>GenericSequence</code>.</p>
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<p>If the mapping function panics, any already initialized elements in the new sequence
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will be dropped, AND any unused elements in the source sequence will also be dropped.</p>
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</div></details><details class="rustdoc-toggle" open><summary><div id="method.zip" class="method has-srclink"><div class="rightside"><a class="srclink" href="../../src/generic_array/functional.rs.html#63-72">source</a></div><h4 class="code-header">fn <a href="#method.zip" class="fnname">zip</a><B, Rhs, U, F>(self, rhs: Rhs, f: F) -> <a class="type" href="type.MappedSequence.html" title="type generic_array::functional::MappedSequence">MappedSequence</a><Self, T, U> <span class="where fmt-newline">where<br> Self: <a class="trait" href="trait.MappedGenericSequence.html" title="trait generic_array::functional::MappedGenericSequence">MappedGenericSequence</a><T, U>,<br> Rhs: <a class="trait" href="trait.MappedGenericSequence.html" title="trait generic_array::functional::MappedGenericSequence">MappedGenericSequence</a><B, U, Mapped = <a class="type" href="type.MappedSequence.html" title="type generic_array::functional::MappedSequence">MappedSequence</a><Self, T, U>>,<br> Self::<a class="associatedtype" href="../sequence/trait.GenericSequence.html#associatedtype.Length" title="type generic_array::sequence::GenericSequence::Length">Length</a>: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><B> + <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><U>,<br> Rhs: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><B, Length = Self::<a class="associatedtype" href="../sequence/trait.GenericSequence.html#associatedtype.Length" title="type generic_array::sequence::GenericSequence::Length">Length</a>>,<br> F: <a class="trait" href="https://doc.rust-lang.org/1.61.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>, Rhs::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>) -> U, </span></h4></div></summary><div class="docblock"><p>Combines two <code>GenericSequence</code> instances and iterates through both of them,
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initializing a new <code>GenericSequence</code> with the result of the zipped mapping function.</p>
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<p>If the mapping function panics, any already initialized elements in the new sequence
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will be dropped, AND any unused elements in the source sequences will also be dropped.</p>
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</div></details><details class="rustdoc-toggle" open><summary><div id="method.fold" class="method has-srclink"><div class="rightside"><a class="srclink" href="../../src/generic_array/functional.rs.html#77-82">source</a></div><h4 class="code-header">fn <a href="#method.fold" class="fnname">fold</a><U, F>(self, init: U, f: F) -> U <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/1.61.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(U, Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.61.0/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>) -> U, </span></h4></div></summary><div class="docblock"><p>Folds (or reduces) a sequence of data into a single value.</p>
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<p>If the fold function panics, any unused elements will be dropped.</p>
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</div></details></div><h2 id="foreign-impls" class="small-section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor"></a></h2><section id="impl-FunctionalSequence%3CT%3E-for-%26%27a%20S" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../../src/generic_array/functional.rs.html#85-89">source</a></span><a href="#impl-FunctionalSequence%3CT%3E-for-%26%27a%20S" class="anchor"></a><h3 class="code-header in-band">impl<'a, T, S: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T>> <a class="trait" href="trait.FunctionalSequence.html" title="trait generic_array::functional::FunctionalSequence">FunctionalSequence</a><T> for <a class="primitive" href="https://doc.rust-lang.org/1.61.0/core/primitive.reference.html">&'a </a>S <span class="where fmt-newline">where<br> <a class="primitive" href="https://doc.rust-lang.org/1.61.0/core/primitive.reference.html">&'a </a>S: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T>, </span></h3></section><section id="impl-FunctionalSequence%3CT%3E-for-%26%27a%20mut%20S" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../../src/generic_array/functional.rs.html#91-95">source</a></span><a href="#impl-FunctionalSequence%3CT%3E-for-%26%27a%20mut%20S" class="anchor"></a><h3 class="code-header in-band">impl<'a, T, S: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T>> <a class="trait" href="trait.FunctionalSequence.html" title="trait generic_array::functional::FunctionalSequence">FunctionalSequence</a><T> for <a class="primitive" href="https://doc.rust-lang.org/1.61.0/core/primitive.reference.html">&'a mut </a>S <span class="where fmt-newline">where<br> <a class="primitive" href="https://doc.rust-lang.org/1.61.0/core/primitive.reference.html">&'a mut </a>S: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T>, </span></h3></section><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"><section id="impl-FunctionalSequence%3CT%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../../src/generic_array/lib.rs.html#462-518">source</a></span><a href="#impl-FunctionalSequence%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, N> <a class="trait" href="trait.FunctionalSequence.html" title="trait generic_array::functional::FunctionalSequence">FunctionalSequence</a><T> for <a class="struct" href="../struct.GenericArray.html" title="struct generic_array::GenericArray">GenericArray</a><T, N> <span class="where fmt-newline">where<br> N: <a class="trait" href="../trait.ArrayLength.html" title="trait generic_array::ArrayLength">ArrayLength</a><T>,<br> Self: <a class="trait" href="../sequence/trait.GenericSequence.html" title="trait generic_array::sequence::GenericSequence">GenericSequence</a><T, Item = T, Length = N>, </span></h3></section></div><script type="text/javascript" src="../../implementors/generic_array/functional/trait.FunctionalSequence.js" async></script></section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="generic_array" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.61.0 (fe5b13d68 2022-05-18)" ></div>
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