<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="`GroupingMap` is an intermediate struct for efficient group-and-fold operations. It groups elements by their key and at the same time fold each group using some aggregating operation."><title>GroupingMap in itertools::structs - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><linkrel="stylesheet"href="../../static.files/normalize-76eba96aa4d2e634.css"><linkrel="stylesheet"href="../../static.files/rustdoc-dd39b87e5fcfba68.css"><metaname="rustdoc-vars"data-root-path="../../"data-static-root-path="../../static.files/"data-current-crate="itertools"data-themes=""data-resource-suffix=""data-rustdoc-version="1.80.0 (051478957 2024-07-21)"data-channel="1.80.0"data-search-js="search-d52510db62a78183.js"data-settings-js="settings-4313503d2e1961c2.js"><scriptsrc="../../static.files/storage-118b08c4c78b968e.js"></script><scriptdefersrc="sidebar-items.js"></script><scriptdefersrc="../../static.files/main-20a3ad099b048cf2.js"></script><noscript><linkrel="stylesheet"href="../../static.files/noscript-df360f571f6edeae.css"></noscript><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-32x32-422f7d1d52889060.png"><linkrel="icon"type="image/svg+xml"href="../../static.files/favicon-2c020d218678b618.svg"></head><bodyclass="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle"title="show sidebar"></button></nav><navclass="sidebar"><divclass="sidebar-crate"><h2><ahref="../../itertools/index.html">itertools</a><spanclass="version">0.13.0</span></h2></div><h2class="location"><ahref="#">GroupingMap</a></h2><divclass="sidebar-elems"><section><h3><ahref="#implementations">Methods</a></h3><ulclass="block method"><li><ahref="#method.aggregate">aggregate</a></li><li><ahref="#method.collect">collect</a></li><li><ahref="#method.fold">fold</a></li><li><ahref="#method.fold_first">fold_first</a></li><li><ahref="#method.fold_with">fold_with</a></li><li><ahref="#method.max">max</a></li><li><ahref="#method.max_by">max_by</a></li><li><ahref="#method.max_by_key">max_by_key</a></li><li><ahref="#method.min">min</a></li><li><ahref="#method.min_by">min_by</a></li><li><ahref="#method.min_by_key">min_by_key</a></li><li><ahref="#method.minmax">minmax</a></li><li><ahref="#method.minmax_by">minmax_by</a></li><li><ahref="#method.minmax_by_key">minmax_by_key</a></li><li><ahref="#method.product">product</a></li><li><ahref="#method.reduce">reduce</a></li><li><ahref="#method.sum">sum</a></li></ul><h3><ahref="#trait-implementations">Trait Implementations</a></h3><ulclass="block trait-implementation"><li><ahref="#impl-Clone-for-GroupingMap%3CI%3E">Clone</a></li><li><ahref="#impl-Debug-for-GroupingMap%3CI%3E">Debug</a></li></ul><h3><ahref="#synthetic-implementations">Auto Trait Implementations</a></h3><ulclass="block synthetic-implementation"><li><ahref="#impl-Freeze-for-GroupingMap%3CI%3E">Freeze</a></li><li><ahref="#impl-RefUnwindSafe-for-GroupingMap%3CI%3E">RefUnwindSafe</a></li><li><ahref="#impl-Send-for-GroupingMap%3CI%3E">Send</a></li><li><ahref="#impl-Sync-for-GroupingMap%3CI%3E">Sync</a></li><li><ahref="#impl-Unpin-for-GroupingMap%3CI%3E">Unpin</a></li><li><ahref="#impl-UnwindSafe-for-GroupingMap%3CI%3E">UnwindSafe</a></li></ul><h3><ahref="#blanket-implementations">Blanket Implementations</a></h3><ulclass="blockblanke
FO: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(<aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html"title="enum core::option::Option">Option</a><R>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, V) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html"title="enum core::option::Option">Option</a><R>,</div></h4></section></summary><divclass="docblock"><p>This is the generic way to perform any operation on a <code>GroupingMap</code>.
<spanclass="macro">assert_eq!</span>(lookup[<spanclass="kw-2">&</span><spanclass="number">0</span>], <spanclass="number">4</span>); <spanclass="comment">// 0 resets the accumulator so only 4 is summed
<spanclass="macro">assert_eq!</span>(lookup.get(<spanclass="kw-2">&</span><spanclass="number">2</span>), <spanclass="prelude-val">None</span>); <spanclass="comment">// 10 resets the accumulator and nothing is summed afterward
<spanclass="macro">assert_eq!</span>(lookup.len(), <spanclass="number">3</span>); <spanclass="comment">// The final keys are only 0, 1 and 2</span></code></pre></div>
FO: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(R, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, V) -> R,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and applies <code>operation</code> to the elements
FO: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(R, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, V) -> R,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and applies <code>operation</code> to the elements
FO: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(V, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, V) -> V,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and applies <code>operation</code> to the elements
of each group sequentially, passing the previously accumulated value, a reference to the key
and the current element as arguments, and stores the results in a new map.</p>
<p>This is similar to <ahref="struct.GroupingMap.html#method.fold"title="method itertools::structs::GroupingMap::fold"><code>fold</code></a> but the initial value of the accumulator is the first element of the group.</p>
<p><code>operation</code> is a function that is invoked on each element with the following parameters:</p>
<ul>
<li>the current value of the accumulator of the group;</li>
<li>a reference to the key of the group this element belongs to;</li>
<li>the element from the source being accumulated.</li>
</ul>
<p>Return a <code>HashMap</code> associating the key of each group with the result of folding that group’s elements.</p>
C: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html"title="trait core::default::Default">Default</a> + <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/iter/traits/collect/trait.Extend.html"title="trait core::iter::traits::collect::Extend">Extend</a><V>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and collects the elements of each group in
V: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Ord.html"title="trait core::cmp::Ord">Ord</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and finds the maximum of each group.</p>
F: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(<aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&V</a>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&V</a>) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/cmp/enum.Ordering.html"title="enum core::cmp::Ordering">Ordering</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and finds the maximum of each group
CK: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Ord.html"title="trait core::cmp::Ord">Ord</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and finds the element of each group
V: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Ord.html"title="trait core::cmp::Ord">Ord</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and finds the minimum of each group.</p>
F: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(<aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&V</a>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&V</a>) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/cmp/enum.Ordering.html"title="enum core::cmp::Ordering">Ordering</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and finds the minimum of each group
CK: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Ord.html"title="trait core::cmp::Ord">Ord</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and finds the element of each group
V: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Ord.html"title="trait core::cmp::Ord">Ord</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and find the maximum and minimum of
<p>See <ahref="../trait.Itertools.html#method.minmax"title="method itertools::Itertools::minmax"><code>Itertools::minmax</code></a> for the non-grouping version.</p>
F: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(<aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&K</a>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&V</a>, <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&V</a>) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/cmp/enum.Ordering.html"title="enum core::cmp::Ordering">Ordering</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and find the maximum and minimum of
CK: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Ord.html"title="trait core::cmp::Ord">Ord</a>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and find the elements of each group
V: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/arith/trait.Add.html"title="trait core::ops::arith::Add">Add</a><V, Output = V>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and sums them.</p>
V: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/arith/trait.Mul.html"title="trait core::ops::arith::Mul">Mul</a><V, Output = V>,</div></h4></section></summary><divclass="docblock"><p>Groups elements from the <code>GroupingMap</code> source by key and multiply them.</p>
<code><ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html"title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-IntoEither-for-T"class="impl"><aclass="src rightside"href="../../src/either/into_either.rs.html#64">source</a><ahref="#impl-IntoEither-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="../../either/into_either/trait.IntoEither.html"title="trait either::into_either::IntoEither">IntoEither</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.into_either"class="method trait-impl"><aclass="src rightside"href="../../src/either/into_either.rs.html#29">source</a><ahref="#method.into_either"class="anchor">§</a><h4class="code-header">fn <ahref="../../either/into_either/trait.IntoEither.html#method.into_either"class="fn">into_either</a>(self, into_left: <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>) -><aclass="enum"href="../enum.Either.html"title="enum itertools::Either">Either</a><Self, Self><ahref="#"class="tooltip"data-notable-ty="Either<Self, Self>">ⓘ</a></h4></section></summary><divclass='docblock'>Converts <code>self</code> into a <ahref="../enum.Either.html#variant.Left"title="variant itertools::Either::Left"><code>Left</code></a> variant of <ahref="../enum.Either.html"title="enum itertools::Either"><code>Either<Self, Self></code></a>
Converts <code>self</code> into a <ahref="../enum.Either.html#variant.Right"title="variant itertools::Either::Right"><code>Right</code></a> variant of <ahref="../enum.Either.html"title="enum itertools::Either"><code>Either<Self, Self></code></a>
F: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html"title="trait core::ops::function::FnOnce">FnOnce</a>(<aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&Self</a>) -><aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,</div></h4></section></summary><divclass='docblock'>Converts <code>self</code> into a <ahref="../enum.Either.html#variant.Left"title="variant itertools::Either::Left"><code>Left</code></a> variant of <ahref="../enum.Either.html"title="enum itertools::Either"><code>Either<Self, Self></code></a>
if <code>into_left(&self)</code> returns <code>true</code>.
Converts <code>self</code> into a <ahref="../enum.Either.html#variant.Right"title="variant itertools::Either::Right"><code>Right</code></a> variant of <ahref="../enum.Either.html"title="enum itertools::Either"><code>Either<Self, Self></code></a>
otherwise. <ahref="../../either/into_either/trait.IntoEither.html#method.into_either_with">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-ToOwned-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/alloc/borrow.rs.html#83-85">source</a><ahref="#impl-ToOwned-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html"title="trait alloc::borrow::ToOwned">ToOwned</a> for T<divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Owned"class="associatedtype trait-impl"><ahref="#associatedtype.Owned"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned"class="associatedtype">Owned</a> = T</h4></section></summary><divclass='docblock'>The resulting type after obtaining ownership.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.to_owned"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/alloc/borrow.rs.html#88">source</a><ahref="#method.to_owned"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned"class="fn">to_owned</a>(&self) -> T</h4></section></summary><divclass='docblock'>Creates owned data from borrowed data, usually by cloning. <ahref="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.clone_into"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/alloc/borrow.rs.html#92">source</a><ahref="#method.clone_into"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#method.clone_into"class="fn">clone_into</a>(&self, target: <aclass="primitive"href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&mut T</a>)</h4></section></summary><divclass='docblock'>Uses borrowed data to replace owned data, usually by cloning. <ahref="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-TryFrom%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#805-807">source</a><ahref="#impl-TryFrom%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T<divclass="where">where
U: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Error"class="associatedtype trait-impl"><ahref="#associatedtype.Error"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error"class="associatedtype">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4></section></summary><divclass='docblock'>The type returned in the event of a conversion error.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_from"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#812">source</a><ahref="#method.try_from"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#tymethod.try_from"class="fn">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="associatedtype"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'>Performs the conversion.</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-TryInto%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#790-792">source</a><ahref="#impl-TryInto%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T<divclass="where">where
U: <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Error-1"class="associatedtype trait-impl"><ahref="#associatedtype.Error-1"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#associatedtype.Error"class="associatedtype">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><divclass='docblock'>The type returned in the event of a conversion error.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_into"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#797">source</a><ahref="#method.try_into"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#tymethod.try_into"class="fn">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'>Performs the conversion.</div></details></div></details></div><scripttype="text/json"id="notable-traits-data">{"Either<Self,Self>":"<h3>Notabletraitsfor<code><aclass=\"enum\"href=\"../enum.Either.html\"title=\"enumitertools::Either\">Either</a><L,R></code></h3><pre><code><divclass=\"where\">impl<L,R><aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Write.html\"title=\"traitstd::io::Write\">Write</a>for<aclass=\"enum\"href=\"../enum.Either.html\"title=\"enumitertools::Either\">Either</a><L,R><divclass=\"where\">where\nL:<aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Write.html\"title=\"traitstd::io::Write\">Write</a>,\nR:<aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Write.html\"title=\"traitstd::io::Write\">Write</a>,</div></div><divclass=\"where\">impl<L,R><aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Read.html\"title=\"traitstd::io::Read\">Read</a>for<aclass=\"enum\"href=\"../enum.Either.html\"title=\"enumitertools::Either\">Either</a><L,R><divclass=\"where\">where\nL:<aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Read.html\"title=\"traitstd::io::Read\">Read</a>,\nR:<aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Read.html\"title=\"traitstd::io::Read\">Read</a>,</div></div><divclass=\"where\">impl<L,R><aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\"title=\"traitcore::iter::traits::iterator::Iterator\">Iterator</a>for<aclass=\"enum\"href=\"../enum.Either.html\"title=\"enumitertools::Either\">Either</a><L,R><divclass=\"where\">where\nL:<aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\"title=\"traitcore::iter::traits::iterator::Iterator\">Iterator</a>,\nR:<aclass=\"trait\"href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\"title=\"traitcore::iter::traits::iterator::Iterator\">Iterator</a><Item=<Las<aclas
