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<p class='location'>Struct Heap</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Copy">Copy</a><a href="#impl-Clone">Clone</a><a href="#impl-Alloc">Alloc</a><a href="#impl-Default">Default</a><a href="#impl-Debug">Debug</a></div></div><p class='location'><a href='../index.html'>std</a>::<wbr><a href='index.html'>heap</a></p><script>window.sidebarCurrent = {name: 'Heap', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>std</a>::<wbr><a href='index.html'>heap</a>::<wbr><a class="struct" href=''>Heap</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version '></span><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>−</span>]
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</span><a class='srclink' href='../../src/alloc/heap.rs.html#78' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct Heap;</pre><div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div>
<h2 id='implementations' class='small-section-header'>
Trait Implementations<a href='#implementations' class='anchor'></a>
</h2>
<h3 id='impl-Copy' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../std/marker/trait.Copy.html" title="trait std::marker::Copy">Copy</a> for <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code><a href='#impl-Copy' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'></div><h3 id='impl-Clone' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../std/clone/trait.Clone.html" title="trait std::clone::Clone">Clone</a> for <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code><a href='#impl-Clone' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='../../std/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns a copy of the value. <a href="../../std/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='../../std/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: <a class="primitive" href="../primitive.reference.html">&</a>Self)</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/clone.rs.html#112-114' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="../../std/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-Alloc' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../std/heap/trait.Alloc.html" title="trait std::heap::Alloc">Alloc</a> for <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code><a href='#impl-Alloc' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#80-229' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.alloc' class="method"><span id='alloc.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#tymethod.alloc' class='fnname'>alloc</a>(&mut self, layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#82-92' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Returns a pointer meeting the size and alignment guarantees of <code>layout</code>. <a href="../../std/heap/trait.Alloc.html#tymethod.alloc">Read more</a></p>
</div><h4 id='method.oom' class="method"><span id='oom.v' class='invisible'><code>fn <a href='../../std/heap/trait.Alloc.html#method.oom' class='fnname'>oom</a>(&mut self, err: <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>) -> <a class="primitive" href="../primitive.never.html">!</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#96-100' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Allocator-specific method for signaling an out-of-memory condition. <a href="../../std/heap/trait.Alloc.html#method.oom">Read more</a></p>
</div><h4 id='method.dealloc' class="method"><span id='dealloc.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#tymethod.dealloc' class='fnname'>dealloc</a>(&mut self, ptr: <a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#103-105' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Deallocate the memory referenced by <code>ptr</code>. <a href="../../std/heap/trait.Alloc.html#tymethod.dealloc">Read more</a></p>
</div><h4 id='method.usable_size' class="method"><span id='usable_size.v' class='invisible'><code>fn <a href='../../std/heap/trait.Alloc.html#method.usable_size' class='fnname'>usable_size</a>(&self, layout: &<a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>) -> <a class="primitive" href="../primitive.tuple.html">(</a><a class="primitive" href="../primitive.usize.html">usize</a>, <a class="primitive" href="../primitive.usize.html">usize</a><a class="primitive" href="../primitive.tuple.html">)</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#108-117' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Returns bounds on the guaranteed usable size of a successful allocation created with the specified <code>layout</code>. <a href="../../std/heap/trait.Alloc.html#method.usable_size">Read more</a></p>
</div><h4 id='method.realloc' class="method"><span id='realloc.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.realloc' class='fnname'>realloc</a>(<br> &mut self, <br> ptr: <a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <br> layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>, <br> new_layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a><br>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#120-139' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Returns a pointer suitable for holding data described by <code>new_layout</code>, meeting its size and alignment guarantees. To accomplish this, this may extend or shrink the allocation referenced by <code>ptr</code> to fit <code>new_layout</code>. <a href="../../std/heap/trait.Alloc.html#method.realloc">Read more</a></p>
</div><h4 id='method.alloc_zeroed' class="method"><span id='alloc_zeroed.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.alloc_zeroed' class='fnname'>alloc_zeroed</a>(&mut self, layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#142-152' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Behaves like <code>alloc</code>, but also ensures that the contents are set to zero before being returned. <a href="../../std/heap/trait.Alloc.html#method.alloc_zeroed">Read more</a></p>
</div><h4 id='method.alloc_excess' class="method"><span id='alloc_excess.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.alloc_excess' class='fnname'>alloc_excess</a>(&mut self, layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="struct" href="../../std/heap/struct.Excess.html" title="struct std::heap::Excess">Excess</a>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#155-167' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Behaves like <code>alloc</code>, but also returns the whole size of the returned block. For some <code>layout</code> inputs, like arrays, this may include extra storage usable for additional data. <a href="../../std/heap/trait.Alloc.html#method.alloc_excess">Read more</a></p>
</div><h4 id='method.realloc_excess' class="method"><span id='realloc_excess.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.realloc_excess' class='fnname'>realloc_excess</a>(<br> &mut self, <br> ptr: <a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <br> layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>, <br> new_layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a><br>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="struct" href="../../std/heap/struct.Excess.html" title="struct std::heap::Excess">Excess</a>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#170-188' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Behaves like <code>realloc</code>, but also returns the whole size of the returned block. For some <code>layout</code> inputs, like arrays, this may include extra storage usable for additional data. <a href="../../std/heap/trait.Alloc.html#method.realloc_excess">Read more</a></p>
</div><h4 id='method.grow_in_place' class="method"><span id='grow_in_place.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.grow_in_place' class='fnname'>grow_in_place</a>(<br> &mut self, <br> ptr: <a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <br> layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>, <br> new_layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a><br>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.unit.html">()</a>, <a class="struct" href="../../std/heap/struct.CannotReallocInPlace.html" title="struct std::heap::CannotReallocInPlace">CannotReallocInPlace</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#191-209' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Attempts to extend the allocation referenced by <code>ptr</code> to fit <code>new_layout</code>. <a href="../../std/heap/trait.Alloc.html#method.grow_in_place">Read more</a></p>
</div><h4 id='method.shrink_in_place' class="method"><span id='shrink_in_place.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.shrink_in_place' class='fnname'>shrink_in_place</a>(<br> &mut self, <br> ptr: <a class="primitive" href="../primitive.pointer.html">*mut </a><a class="primitive" href="../primitive.u8.html">u8</a>, <br> layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a>, <br> new_layout: <a class="struct" href="../../std/heap/struct.Layout.html" title="struct std::heap::Layout">Layout</a><br>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.unit.html">()</a>, <a class="struct" href="../../std/heap/struct.CannotReallocInPlace.html" title="struct std::heap::CannotReallocInPlace">CannotReallocInPlace</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#212-228' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Attempts to shrink the allocation referenced by <code>ptr</code> to fit <code>new_layout</code>. <a href="../../std/heap/trait.Alloc.html#method.shrink_in_place">Read more</a></p>
</div><h4 id='method.alloc_one' class="method"><span id='alloc_one.v' class='invisible'><code>fn <a href='../../std/heap/trait.Alloc.html#method.alloc_one' class='fnname'>alloc_one</a><T>(&mut self) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="struct" href="../../std/ptr/struct.NonNull.html" title="struct std::ptr::NonNull">NonNull</a><T>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/allocator.rs.html#898-907' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Allocates a block suitable for holding an instance of <code>T</code>. <a href="../../std/heap/trait.Alloc.html#method.alloc_one">Read more</a></p>
</div><h4 id='method.dealloc_one' class="method"><span id='dealloc_one.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.dealloc_one' class='fnname'>dealloc_one</a><T>(&mut self, ptr: <a class="struct" href="../../std/ptr/struct.NonNull.html" title="struct std::ptr::NonNull">NonNull</a><T>)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/allocator.rs.html#926-934' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Deallocates a block suitable for holding an instance of <code>T</code>. <a href="../../std/heap/trait.Alloc.html#method.dealloc_one">Read more</a></p>
</div><h4 id='method.alloc_array' class="method"><span id='alloc_array.v' class='invisible'><code>fn <a href='../../std/heap/trait.Alloc.html#method.alloc_array' class='fnname'>alloc_array</a><T>(&mut self, n: <a class="primitive" href="../primitive.usize.html">usize</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="struct" href="../../std/ptr/struct.NonNull.html" title="struct std::ptr::NonNull">NonNull</a><T>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/allocator.rs.html#966-980' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Allocates a block suitable for holding <code>n</code> instances of <code>T</code>. <a href="../../std/heap/trait.Alloc.html#method.alloc_array">Read more</a></p>
</div><h4 id='method.realloc_array' class="method"><span id='realloc_array.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.realloc_array' class='fnname'>realloc_array</a><T>(<br> &mut self, <br> ptr: <a class="struct" href="../../std/ptr/struct.NonNull.html" title="struct std::ptr::NonNull">NonNull</a><T>, <br> n_old: <a class="primitive" href="../primitive.usize.html">usize</a>, <br> n_new: <a class="primitive" href="../primitive.usize.html">usize</a><br>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="struct" href="../../std/ptr/struct.NonNull.html" title="struct std::ptr::NonNull">NonNull</a><T>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/allocator.rs.html#1014-1029' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Reallocates a block previously suitable for holding <code>n_old</code> instances of <code>T</code>, returning a block suitable for holding <code>n_new</code> instances of <code>T</code>. <a href="../../std/heap/trait.Alloc.html#method.realloc_array">Read more</a></p>
</div><h4 id='method.dealloc_array' class="method"><span id='dealloc_array.v' class='invisible'><code>unsafe fn <a href='../../std/heap/trait.Alloc.html#method.dealloc_array' class='fnname'>dealloc_array</a><T>(<br> &mut self, <br> ptr: <a class="struct" href="../../std/ptr/struct.NonNull.html" title="struct std::ptr::NonNull">NonNull</a><T>, <br> n: <a class="primitive" href="../primitive.usize.html">usize</a><br>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.unit.html">()</a>, <a class="enum" href="../../std/heap/enum.AllocErr.html" title="enum std::heap::AllocErr">AllocErr</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/allocator.rs.html#1051-1063' title='goto source code'>[src]</a></span></h4>
<div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>allocator_api </code><a href="https://github.com/rust-lang/rust/issues/32838">#32838</a>)</summary><p>the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector</p>
</details></div></div><div class='docblock'><p>Deallocates a block suitable for holding <code>n</code> instances of <code>T</code>. <a href="../../std/heap/trait.Alloc.html#method.dealloc_array">Read more</a></p>
</div></div><h3 id='impl-Default' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../std/default/trait.Default.html" title="trait std::default::Default">Default</a> for <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code><a href='#impl-Default' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.default' class="method"><span id='default.v' class='invisible'><code>fn <a href='../../std/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -> <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the "default value" for a type. <a href="../../std/default/trait.Default.html#tymethod.default">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../std/fmt/trait.Debug.html" title="trait std::fmt::Debug">Debug</a> for <a class="struct" href="../../std/heap/struct.Heap.html" title="struct std::heap::Heap">Heap</a></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='../../std/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="../../std/fmt/struct.Formatter.html" title="struct std::fmt::Formatter">Formatter</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.unit.html">()</a>, <a class="struct" href="../../std/fmt/struct.Error.html" title="struct std::fmt::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/alloc/heap.rs.html#77' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Formats the value using the given formatter. <a href="../../std/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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