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104 lines
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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="Values supported by [`Mmap::unsafe_advise`][crate::Mmap::unsafe_advise] and [`MmapMut::unsafe_advise`][crate::MmapMut::unsafe_advise] functions."><title>UncheckedAdvice in memmap2 - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.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" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-42caa33d.css"><meta name="rustdoc-vars" data-root-path="../" 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class="sidebar-crate"><h2><a href="../memmap2/index.html">memmap2</a><span class="version">0.9.5</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Unchecked<wbr>Advice</a></h2><h3><a href="#variants">Variants</a></h3><ul class="block variant"><li><a href="#variant.DontNeed" title="DontNeed">DontNeed</a></li><li><a href="#variant.Free" title="Free">Free</a></li><li><a href="#variant.Remove" title="Remove">Remove</a></li></ul><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.is_supported" title="is_supported">is_supported</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-UncheckedAdvice" title="Clone">Clone</a></li><li><a href="#impl-Copy-for-UncheckedAdvice" title="Copy">Copy</a></li><li><a href="#impl-Debug-for-UncheckedAdvice" title="Debug">Debug</a></li><li><a href="#impl-Eq-for-UncheckedAdvice" title="Eq">Eq</a></li><li><a href="#impl-Hash-for-UncheckedAdvice" title="Hash">Hash</a></li><li><a href="#impl-PartialEq-for-UncheckedAdvice" title="PartialEq">PartialEq</a></li><li><a href="#impl-StructuralPartialEq-for-UncheckedAdvice" title="StructuralPartialEq">StructuralPartialEq</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-UncheckedAdvice" title="Freeze">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-UncheckedAdvice" title="RefUnwindSafe">RefUnwindSafe</a></li><li><a href="#impl-Send-for-UncheckedAdvice" title="Send">Send</a></li><li><a href="#impl-Sync-for-UncheckedAdvice" title="Sync">Sync</a></li><li><a href="#impl-Unpin-for-UncheckedAdvice" title="Unpin">Unpin</a></li><li><a href="#impl-UnwindSafe-for-UncheckedAdvice" title="UnwindSafe">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow<T>">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut<T>">BorrowMut<T></a></li><li><a href="#impl-CloneToUninit-for-T" title="CloneToUninit">CloneToUninit</a></li><li><a href="#impl-From%3CT%3E-for-T" title="From<T>">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into<U>">Into<U></a></li><li><a href="#impl-ToOwned-for-T" title="ToOwned">ToOwned</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom<U>">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto<U>">TryInto<U></a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate memmap2</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">memmap2</a></span><h1>Enum <span class="enum">UncheckedAdvice</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/memmap2/advice.rs.html#252-377">Source</a> </span></div><pre class="rust item-decl"><code><div class="code-attribute">#[repr(i32)]</div>pub enum UncheckedAdvice {
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DontNeed = 4,
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Free = 8,
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Remove = 9,
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Values supported by [<code>Mmap::unsafe_advise</code>][crate::Mmap::unsafe_advise] and [<code>MmapMut::unsafe_advise</code>][crate::MmapMut::unsafe_advise] functions.</p>
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<p>These flags can be passed to the <a href="https://man7.org/linux/man-pages/man2/madvise.2.html">madvise (2)</a> system call
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and effects on the mapped pages which are conceptually writes,
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i.e. the change the observable contents of these pages which
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implies undefined behaviour if the mapping is still borrowed.</p>
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<p>Hence, these potentially unsafe flags must be used with the unsafe
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methods and the programmer has to justify that the code
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does not keep any borrows of the mapping active while the mapped pages
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are updated by the kernel’s memory management subsystem.</p>
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</div></details><h2 id="variants" class="variants section-header">Variants<a href="#variants" class="anchor">§</a></h2><div class="variants"><section id="variant.DontNeed" class="variant"><a href="#variant.DontNeed" class="anchor">§</a><h3 class="code-header">DontNeed = 4</h3></section><div class="docblock"><p><strong>MADV_DONTNEED</strong></p>
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<p>Do not expect access in the near future. (For the time
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being, the application is finished with the given range,
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so the kernel can free resources associated with it.)</p>
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<p>After a successful MADV_DONTNEED operation, the semantics
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of memory access in the specified region are changed:
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subsequent accesses of pages in the range will succeed,
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but will result in either repopulating the memory contents
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from the up-to-date contents of the underlying mapped file
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(for shared file mappings, shared anonymous mappings, and
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shmem-based techniques such as System V shared memory
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segments) or zero-fill-on-demand pages for anonymous
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private mappings.</p>
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<p>Note that, when applied to shared mappings, MADV_DONTNEED
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might not lead to immediate freeing of the pages in the
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range. The kernel is free to delay freeing the pages
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until an appropriate moment. The resident set size (RSS)
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of the calling process will be immediately reduced
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however.</p>
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<p><strong>MADV_DONTNEED</strong> cannot be applied to locked pages, Huge TLB
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pages, or VM_PFNMAP pages. (Pages marked with the kernel-
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internal VM_PFNMAP flag are special memory areas that are
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not managed by the virtual memory subsystem. Such pages
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are typically created by device drivers that map the pages
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into user space.)</p>
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<h4 id="safety"><a class="doc-anchor" href="#safety">§</a>Safety</h4>
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<p>Using the returned value with conceptually write to the
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mapped pages, i.e. borrowing the mapping when the pages
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are freed results in undefined behaviour.</p>
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</div><section id="variant.Free" class="variant"><a href="#variant.Free" class="anchor">§</a><h3 class="code-header">Free = 8</h3></section><div class="docblock"><p><strong>MADV_FREE</strong> - Linux (since Linux 4.5) and Darwin</p>
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<p>The application no longer requires the pages in the range
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specified by addr and len. The kernel can thus free these
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pages, but the freeing could be delayed until memory
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pressure occurs. For each of the pages that has been
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marked to be freed but has not yet been freed, the free
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operation will be canceled if the caller writes into the
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page. After a successful MADV_FREE operation, any stale
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data (i.e., dirty, unwritten pages) will be lost when the
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kernel frees the pages. However, subsequent writes to
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pages in the range will succeed and then kernel cannot
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free those dirtied pages, so that the caller can always
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see just written data. If there is no subsequent write,
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the kernel can free the pages at any time. Once pages in
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the range have been freed, the caller will see zero-fill-
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on-demand pages upon subsequent page references.</p>
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<p>The MADV_FREE operation can be applied only to private
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anonymous pages (see mmap(2)). In Linux before version
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4.12, when freeing pages on a swapless system, the pages
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in the given range are freed instantly, regardless of
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memory pressure.</p>
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<h4 id="safety-1"><a class="doc-anchor" href="#safety-1">§</a>Safety</h4>
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<p>Using the returned value with conceptually write to the
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mapped pages, i.e. borrowing the mapping while the pages
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are still being freed results in undefined behaviour.</p>
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</div><section id="variant.Remove" class="variant"><a href="#variant.Remove" class="anchor">§</a><h3 class="code-header">Remove = 9</h3></section><div class="docblock"><p><strong>MADV_REMOVE</strong> - Linux only (since Linux 2.6.16)</p>
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<p>Free up a given range of pages and its associated backing
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store. This is equivalent to punching a hole in the
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corresponding byte range of the backing store (see
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fallocate(2)). Subsequent accesses in the specified
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address range will see bytes containing zero.</p>
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<p>The specified address range must be mapped shared and
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writable. This flag cannot be applied to locked pages,
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Huge TLB pages, or VM_PFNMAP pages.</p>
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<p>In the initial implementation, only tmpfs(5) was supported
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<strong>MADV_REMOVE</strong>; but since Linux 3.5, any filesystem which
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supports the fallocate(2) FALLOC_FL_PUNCH_HOLE mode also
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supports MADV_REMOVE. Hugetlbfs fails with the error
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EINVAL and other filesystems fail with the error
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EOPNOTSUPP.</p>
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<h4 id="safety-2"><a class="doc-anchor" href="#safety-2">§</a>Safety</h4>
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<p>Using the returned value with conceptually write to the
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mapped pages, i.e. borrowing the mapping when the pages
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are freed results in undefined behaviour.</p>
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</div></div><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#398-406">Source</a><a href="#impl-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.is_supported" class="method"><a class="src rightside" href="../src/memmap2/advice.rs.html#403-405">Source</a><h4 class="code-header">pub fn <a href="#method.is_supported" class="fn">is_supported</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Performs a runtime check if this advice is supported by the kernel.
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Only supported on Linux. See the <a href="https://man7.org/linux/man-pages/man2/madvise.2.html#VERSIONS"><code>madvise(2)</code></a> man page.</p>
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</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-Clone-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&self) -> <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.84.0/src/core/clone.rs.html#174">Source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&mut self, source: &Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-Debug-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.84.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.84.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.84.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Hash-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-Hash-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.hash" class="method trait-impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#method.hash" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hash.html#tymethod.hash" class="fn">hash</a><__H: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(&self, state: <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.reference.html">&mut __H</a>)</h4></section></summary><div class='docblock'>Feeds this value into the given <a href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher"><code>Hasher</code></a>. <a href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hash.html#tymethod.hash">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.hash_slice" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.3.0">1.3.0</span> · <a class="src" href="https://doc.rust-lang.org/1.84.0/src/core/hash/mod.rs.html#235-237">Source</a></span><a href="#method.hash_slice" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hash.html#method.hash_slice" class="fn">hash_slice</a><H>(data: &[Self], state: <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.reference.html">&mut H</a>)<div class="where">where
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H: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>,
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Self: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Feeds a slice of this type into the given <a href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hasher.html" title="trait core::hash::Hasher"><code>Hasher</code></a>. <a href="https://doc.rust-lang.org/1.84.0/core/hash/trait.Hash.html#method.hash_slice">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-PartialEq-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-PartialEq-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.eq" class="method trait-impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#method.eq" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/cmp/trait.PartialEq.html#tymethod.eq" class="fn">eq</a>(&self, other: &<a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.ne" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.84.0/src/core/cmp.rs.html#261">Source</a></span><a href="#method.ne" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/cmp/trait.PartialEq.html#method.ne" class="fn">ne</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Tests for <code>!=</code>. The default implementation is almost always sufficient,
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and should not be overridden without very good reason.</div></details></div></details><section id="impl-Copy-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-Copy-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-Eq-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-Eq-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-StructuralPartialEq-for-UncheckedAdvice" class="impl"><a class="src rightside" href="../src/memmap2/advice.rs.html#251">Source</a><a href="#impl-StructuralPartialEq-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.StructuralPartialEq.html" title="trait core::marker::StructuralPartialEq">StructuralPartialEq</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-UncheckedAdvice" class="impl"><a href="#impl-Freeze-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-RefUnwindSafe-for-UncheckedAdvice" class="impl"><a href="#impl-RefUnwindSafe-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-Send-for-UncheckedAdvice" class="impl"><a href="#impl-Send-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-Sync-for-UncheckedAdvice" class="impl"><a href="#impl-Sync-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-Unpin-for-UncheckedAdvice" class="impl"><a href="#impl-Unpin-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section><section id="impl-UnwindSafe-for-UncheckedAdvice" class="impl"><a href="#impl-UnwindSafe-for-UncheckedAdvice" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="enum" href="enum.UncheckedAdvice.html" title="enum memmap2::UncheckedAdvice">UncheckedAdvice</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/any.rs.html#138">Source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
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T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/any.rs.html#139">Source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.84.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.84.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/borrow.rs.html#209">Source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/borrow.rs.html#211">Source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.84.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/borrow.rs.html#217">Source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.84.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/borrow.rs.html#218">Source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.84.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-CloneToUninit-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/clone.rs.html#273">Source</a><a href="#impl-CloneToUninit-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/clone/trait.CloneToUninit.html" title="trait core::clone::CloneToUninit">CloneToUninit</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone_to_uninit" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/clone.rs.html#275">Source</a><a href="#method.clone_to_uninit" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="https://doc.rust-lang.org/1.84.0/core/clone/trait.CloneToUninit.html#tymethod.clone_to_uninit" class="fn">clone_to_uninit</a>(&self, dst: <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.pointer.html">*mut </a><a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.u8.html">u8</a>)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>clone_to_uninit</code>)</span></div></span><div class='docblock'>Performs copy-assignment from <code>self</code> to <code>dst</code>. <a href="https://doc.rust-lang.org/1.84.0/core/clone/trait.CloneToUninit.html#tymethod.clone_to_uninit">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#765">Source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#768">Source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#748-750">Source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#758">Source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToOwned-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/alloc/borrow.rs.html#82-84">Source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.84.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/alloc/borrow.rs.html#86">Source</a><a href="#associatedtype.Owned" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.84.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/alloc/borrow.rs.html#87">Source</a><a href="#method.to_owned" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.84.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/alloc/borrow.rs.html#91">Source</a><a href="#method.clone_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.reference.html">&mut T</a>)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/1.84.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#805-807">Source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#809">Source</a><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.84.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#812">Source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.84.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#790-792">Source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#794">Source</a><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.84.0/src/core/convert/mod.rs.html#797">Source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.84.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.84.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html> |