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<p class='location'><a href='../../index.html'>bitflags</a>::<wbr><a href='../index.html'>__core</a>::<wbr><a href='index.html'>ops</a></p><script>window.sidebarCurrent = {name: 'Placer', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content trait">
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<h1 class='fqn'><span class='in-band'>Trait <a href='../../index.html'>bitflags</a>::<wbr><a href='../index.html'>__core</a>::<wbr><a href='index.html'>ops</a>::<wbr><a class='trait' href=''>Placer</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a id='src-21889' class='srclink' href='https://doc.rust-lang.org/nightly/core/ops/trait.Placer.html?gotosrc=21889' title='goto source code'>[src]</a></span></h1>
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<pre class='rust trait'>pub trait Placer<Data> <span class='where'>where Data: ?<a class='trait' href='../../../bitflags/__core/marker/trait.Sized.html' title='bitflags::__core::marker::Sized'>Sized</a></span> {
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type <a href='#associatedtype.Place' class='type'>Place</a>: <a class='trait' href='../../../bitflags/__core/ops/trait.InPlace.html' title='bitflags::__core::ops::InPlace'>InPlace</a><Data>;
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fn <a href='#tymethod.make_place' class='fnname'>make_place</a>(self) -> Self::<a class='trait' href='../../../bitflags/__core/ops/trait.Placer.html' title='bitflags::__core::ops::Placer'>Place</a>;
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}</pre><div class='stability'><em class='stab unstable'>Unstable (<code>placement_new_protocol</code>)</em></div><div class='docblock'><p>Interface to implementations of <code>in (PLACE) EXPR</code>.</p>
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<p><code>in (PLACE) EXPR</code> effectively desugars into:</p>
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<pre class='rust rust-example-rendered'>
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<span class='kw'>let</span> <span class='ident'>p</span> <span class='op'>=</span> <span class='ident'>PLACE</span>;
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<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>place</span> <span class='op'>=</span> <span class='ident'>Placer</span>::<span class='ident'>make_place</span>(<span class='ident'>p</span>);
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<span class='kw'>let</span> <span class='ident'>raw_place</span> <span class='op'>=</span> <span class='ident'>Place</span>::<span class='ident'>pointer</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>place</span>);
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<span class='kw'>let</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='ident'>EXPR</span>;
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<span class='kw'>unsafe</span> {
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<span class='ident'>std</span>::<span class='ident'>ptr</span>::<span class='ident'>write</span>(<span class='ident'>raw_place</span>, <span class='ident'>value</span>);
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<span class='ident'>InPlace</span>::<span class='ident'>finalize</span>(<span class='ident'>place</span>)
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}</pre>
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<p>The type of <code>in (PLACE) EXPR</code> is derived from the type of <code>PLACE</code>;
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if the type of <code>PLACE</code> is <code>P</code>, then the final type of the whole
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expression is <code>P::Place::Owner</code> (see the <code>InPlace</code> and <code>Boxed</code>
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traits).</p>
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<p>Values for types implementing this trait usually are transient
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intermediate values (e.g. the return value of <code>Vec::emplace_back</code>)
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or <code>Copy</code>, since the <code>make_place</code> method takes <code>self</code> by value.</p>
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</div>
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<h2 id='associated-types'>Associated Types</h2>
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<div class='methods'>
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<h3 id='associatedtype.Place' class='method stab unstable'><code>type <a href='#associatedtype.Place' class='type'>Place</a>: <a class='trait' href='../../../bitflags/__core/ops/trait.InPlace.html' title='bitflags::__core::ops::InPlace'>InPlace</a><Data></code></h3><div class='stability'><em class='stab unstable'>Unstable (<code>placement_new_protocol</code>)</em></div><div class='docblock'><p><code>Place</code> is the intermedate agent guarding the
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uninitialized state for <code>Data</code>.</p>
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</div></div>
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<h2 id='required-methods'>Required Methods</h2>
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<div class='methods'>
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<h3 id='tymethod.make_place' class='method stab unstable'><code>fn <a href='#tymethod.make_place' class='fnname'>make_place</a>(self) -> Self::<a class='trait' href='../../../bitflags/__core/ops/trait.Placer.html' title='bitflags::__core::ops::Placer'>Place</a></code></h3><div class='stability'><em class='stab unstable'>Unstable (<code>placement_new_protocol</code>)</em></div><div class='docblock'><p>Creates a fresh place from <code>self</code>.</p>
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<li><code>impl<'a, T> Placer for <a class='struct' href='../../../bitflags/__core/collections/linked_list/struct.FrontPlace.html' title='bitflags::__core::collections::linked_list::FrontPlace'>FrontPlace</a><'a, T></code></li>
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<li><code>impl<'a, T> Placer for <a class='struct' href='../../../bitflags/__core/collections/linked_list/struct.BackPlace.html' title='bitflags::__core::collections::linked_list::BackPlace'>BackPlace</a><'a, T></code></li>
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<li><code>impl<T> Placer for <a class='struct' href='../../../bitflags/__core/boxed/struct.ExchangeHeapSingleton.html' title='bitflags::__core::boxed::ExchangeHeapSingleton'>ExchangeHeapSingleton</a></code></li>
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