<!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="API documentation for the Rust `NonNull` struct in crate `core`."><meta name="keywords" content="rust, rustlang, rust-lang, NonNull"><title>core::ptr::NonNull - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize1.35.0.css"><link rel="stylesheet" type="text/css" href="../../rustdoc1.35.0.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark1.35.0.css"><link rel="stylesheet" type="text/css" href="../../light1.35.0.css" id="themeStyle"><script src="../../storage1.35.0.js"></script><noscript><link rel="stylesheet" href="../../noscript1.35.0.css"></noscript><link rel="shortcut icon" href="../../favicon1.35.0.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow1.35.0.svg");}</style></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../core/index.html'><img src='../../rust-logo1.35.0.png' alt='logo' width='100'></a><p class='location'>Struct NonNull</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.as_mut">as_mut</a><a href="#method.as_ptr">as_ptr</a><a href="#method.as_ref">as_ref</a><a href="#method.cast">cast</a><a href="#method.dangling">dangling</a><a href="#method.new">new</a><a href="#method.new_unchecked">new_unchecked</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-CoerceUnsized%3CNonNull%3CU%3E%3E">CoerceUnsized<NonNull<U>></a><a href="#impl-Copy">Copy</a><a href="#impl-Debug">Debug</a><a href="#impl-DispatchFromDyn%3CNonNull%3CU%3E%3E">DispatchFromDyn<NonNull<U>></a><a href="#impl-Eq">Eq</a><a href="#impl-From%3C%26%27_%20T%3E">From<&'_ T></a><a href="#impl-From%3C%26%27_%20mut%20T%3E">From<&'_ mut T></a><a href="#impl-Hash">Hash</a><a href="#impl-Ord">Ord</a><a href="#impl-PartialEq%3CNonNull%3CT%3E%3E">PartialEq<NonNull<T>></a><a href="#impl-PartialOrd%3CNonNull%3CT%3E%3E">PartialOrd<NonNull<T>></a><a href="#impl-Pointer">Pointer</a><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow">Borrow</a><a href="#impl-BorrowMut">BorrowMut</a><a href="#impl-From">From</a><a href="#impl-Into">Into</a><a href="#impl-TryFrom">TryFrom</a><a href="#impl-TryInto">TryInto</a></div></div><p class='location'><a href='../index.html'>core</a>::<wbr><a href='index.html'>ptr</a></p><script>window.sidebarCurrent = {name: 'NonNull', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush1.35.0.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme1.35.0.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel1.35.0.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span class='since' title='Stable since Rust version 1.25.0'>1.25.0</span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/core/ptr.rs.html#2936-2938' title='goto source code'>[src]</a></span><span class='in-band'>Struct <a href='../index.html'>core</a>::<wbr><a href='index.html'>ptr</a>::<wbr><a class="struct" href=''>NonNull</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust struct'><div class="docblock attributes">#[repr(transparent)]
</div>pub struct NonNull<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> { /* fields omitted */ }</pre></div><div class='docblock'><p><code>*mut T</code> but non-zero and covariant.</p>
<p>This is often the correct thing to use when building data structures using
raw pointers, but is ultimately more dangerous to use because of its additional
properties. If you're not sure if you should use <code>NonNull<T></code>, just use <code>*mut T</code>!</p>
<p>Unlike <code>*mut T</code>, the pointer must always be non-null, even if the pointer
is never dereferenced. This is so that enums may use this forbidden value
as a discriminant -- <code>Option<NonNull<T>></code> has the same size as <code>*mut T</code>.
However the pointer may still dangle if it isn't dereferenced.</p>
<p>Unlike <code>*mut T</code>, <code>NonNull<T></code> is covariant over <code>T</code>. If this is incorrect
for your use case, you should include some <a href="../marker/struct.PhantomData.html"><code>PhantomData</code></a> in your type to
provide invariance, such as <code>PhantomData<Cell<T>></code> or <code>PhantomData<&'a mut T></code>.
Usually this won't be necessary; covariance is correct for most safe abstractions,
such as <code>Box</code>, <code>Rc</code>, <code>Arc</code>, <code>Vec</code>, and <code>LinkedList</code>. This is the case because they
provide a public API that follows the normal shared XOR mutable rules of Rust.</p>
<p>Notice that <code>NonNull<T></code> has a <code>From</code> instance for <code>&T</code>. However, this does
not change the fact that mutating through a (pointer derived from a) shared
reference is undefined behavior unless the mutation happens inside an
<a href="../cell/struct.UnsafeCell.html"><code>UnsafeCell<T></code></a>. The same goes for creating a mutable reference from a shared
reference. When using this <code>From</code> instance without an <code>UnsafeCell<T></code>,
it is your responsibility to ensure that <code>as_mut</code> is never called, and <code>as_ptr</code>
is never used for mutation.</p>
</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><code class='in-band'>impl<T: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#2950-2969' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.dangling' class="method"><code id='dangling.v'>pub const fn <a href='#method.dangling' class='fnname'>dangling</a>() -> Self</code><a class='srclink' href='../../src/core/ptr.rs.html#2963-2968' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a new <code>NonNull</code> that is dangling, but well-aligned.</p>
<p>This is useful for initializing types which lazily allocate, like
<code>Vec::new</code> does.</p>
<p>Note that the pointer value may potentially represent a valid pointer to
a <code>T</code>, which means this must not be used as a "not yet initialized"
sentinel value. Types that lazily allocate must track initialization by
some other means.</p>
</div></div><h3 id='impl-1' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-1' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#2971-3032' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.new_unchecked' class="method"><code id='new_unchecked.v'>pub const unsafe fn <a href='#method.new_unchecked' class='fnname'>new_unchecked</a>(ptr: *mut T) -> Self</code><a class='srclink' href='../../src/core/ptr.rs.html#2979-2981' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a new <code>NonNull</code>.</p>
<h1 id="safety" class="section-header"><a href="#safety">Safety</a></h1>
<p><code>ptr</code> must be non-null.</p>
</div><h4 id='method.new' class="method"><code id='new.v'>pub fn <a href='#method.new' class='fnname'>new</a>(ptr: *mut T) -> <a class="enum" href="../../core/option/enum.Option.html" title="enum core::option::Option">Option</a><Self></code><a class='srclink' href='../../src/core/ptr.rs.html#2986-2992' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a new <code>NonNull</code> if <code>ptr</code> is non-null.</p>
</div><h4 id='method.as_ptr' class="method"><code id='as_ptr.v'>pub const fn <a href='#method.as_ptr' class='fnname'>as_ptr</a>(self) -> *mut T</code><a class='srclink' href='../../src/core/ptr.rs.html#2997-2999' title='goto source code'>[src]</a></h4><div class='docblock'><p>Acquires the underlying <code>*mut</code> pointer.</p>
</div><h4 id='method.as_ref' class="method"><code id='as_ref.v'>pub unsafe fn <a href='#method.as_ref' class='fnname'>as_ref</a>(&self) -> &T</code><a class='srclink' href='../../src/core/ptr.rs.html#3008-3010' title='goto source code'>[src]</a></h4><div class='docblock'><p>Dereferences the content.</p>
<p>The resulting lifetime is bound to self so this behaves "as if"
it were actually an instance of T that is getting borrowed. If a longer
(unbound) lifetime is needed, use <code>&*my_ptr.as_ptr()</code>.</p>
</div><h4 id='method.as_mut' class="method"><code id='as_mut.v'>pub unsafe fn <a href='#method.as_mut' class='fnname'>as_mut</a>(&mut self) -> &mut T</code><a class='srclink' href='../../src/core/ptr.rs.html#3019-3021' title='goto source code'>[src]</a></h4><div class='docblock'><p>Mutably dereferences the content.</p>
<p>The resulting lifetime is bound to self so this behaves "as if"
it were actually an instance of T that is getting borrowed. If a longer
(unbound) lifetime is needed, use <code>&mut *my_ptr.as_ptr()</code>.</p>
</div><h4 id='method.cast' class="method"><code id='cast.v'>pub const fn <a href='#method.cast' class='fnname'>cast</a><U>(self) -> <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><U></code><div class='since' title='Stable since Rust version 1.27.0'>1.27.0</div><a class='srclink' href='../../src/core/ptr.rs.html#3027-3031' title='goto source code'>[src]</a></h4><div class='docblock'><p>Cast to a pointer of another type</p>
</div></div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-Send' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !<a class="trait" href="../../core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Send' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#2943' title='goto source code'>[src]</a></h3><div class='docblock'><p><code>NonNull</code> pointers are not <code>Send</code> because the data they reference may be aliased.</p>
</div><div class='impl-items'></div><h3 id='impl-Copy' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Copy' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3042' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !<a class="trait" href="../../core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Sync' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#2948' title='goto source code'>[src]</a></h3><div class='docblock'><p><code>NonNull</code> pointers are not <code>Sync</code> because the data they reference may be aliased.</p>
</div><div class='impl-items'></div><h3 id='impl-CoerceUnsized%3CNonNull%3CU%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/ops/trait.CoerceUnsized.html" title="trait core::ops::CoerceUnsized">CoerceUnsized</a><<a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><U>> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/marker/trait.Unsize.html" title="trait core::marker::Unsize">Unsize</a><U>, </span></code><a href='#impl-CoerceUnsized%3CNonNull%3CU%3E%3E' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3045' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-DispatchFromDyn%3CNonNull%3CU%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/ops/trait.DispatchFromDyn.html" title="trait core::ops::DispatchFromDyn">DispatchFromDyn</a><<a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><U>> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/marker/trait.Unsize.html" title="trait core::marker::Unsize">Unsize</a><U>, </span></code><a href='#impl-DispatchFromDyn%3CNonNull%3CU%3E%3E' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3048' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-PartialEq%3CNonNull%3CT%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><<a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T>> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-PartialEq%3CNonNull%3CT%3E%3E' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3068-3073' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.eq' class="method hidden"><code id='eq.v'>fn <a href='../../core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&self, other: &Self) -> bool</code><a class='srclink' href='../../src/core/ptr.rs.html#3070-3072' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="../../core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
</div><h4 id='method.ne' class="method"><code id='ne.v'><div class="docblock attributes">#[must_use]
</div>fn <a href='../../core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&self, other: &Rhs) -> bool</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/cmp.rs.html#200' title='goto source code'>[src]</a></h4><div class='docblock'><p>This method tests for <code>!=</code>.</p>
</div></div><h3 id='impl-Eq' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Eq' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3065' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Ord' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Ord' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3076-3081' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.cmp' class="method hidden"><code id='cmp.v'>fn <a href='../../core/cmp/trait.Ord.html#tymethod.cmp' class='fnname'>cmp</a>(&self, other: &Self) -> <a class="enum" href="../../core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></code><a class='srclink' href='../../src/core/ptr.rs.html#3078-3080' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method returns an <code>Ordering</code> between <code>self</code> and <code>other</code>. <a href="../../core/cmp/trait.Ord.html#tymethod.cmp">Read more</a></p>
</div><h4 id='method.max' class="method"><code id='max.v'>fn <a href='../../core/cmp/trait.Ord.html#method.max' class='fnname'>max</a>(self, other: Self) -> Self <span class="where fmt-newline">where<br> Self: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/core/cmp.rs.html#549-552' title='goto source code'>[src]</a></h4><div class='docblock'><p>Compares and returns the maximum of two values. <a href="../../core/cmp/trait.Ord.html#method.max">Read more</a></p>
</div><h4 id='method.min' class="method"><code id='min.v'>fn <a href='../../core/cmp/trait.Ord.html#method.min' class='fnname'>min</a>(self, other: Self) -> Self <span class="where fmt-newline">where<br> Self: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/core/cmp.rs.html#566-569' title='goto source code'>[src]</a></h4><div class='docblock'><p>Compares and returns the minimum of two values. <a href="../../core/cmp/trait.Ord.html#method.min">Read more</a></p>
</div><h4 id='method.clamp' class="method"><code id='clamp.v'>fn <a href='../../core/cmp/trait.Ord.html#method.clamp' class='fnname'>clamp</a>(self, min: Self, max: Self) -> Self <span class="where fmt-newline">where<br> Self: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a class='srclink' href='../../src/core/cmp.rs.html#590-600' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>clamp</code> <a href="https://github.com/rust-lang/rust/issues/44095">#44095</a>)</div></div><div class='docblock'><p>Restrict a value to a certain interval. <a href="../../core/cmp/trait.Ord.html#method.clamp">Read more</a></p>
</div></div><h3 id='impl-PartialOrd%3CNonNull%3CT%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a><<a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T>> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-PartialOrd%3CNonNull%3CT%3E%3E' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3084-3089' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.partial_cmp' class="method hidden"><code id='partial_cmp.v'>fn <a href='../../core/cmp/trait.PartialOrd.html#tymethod.partial_cmp' class='fnname'>partial_cmp</a>(&self, other: &Self) -> <a class="enum" href="../../core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="../../core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>></code><a class='srclink' href='../../src/core/ptr.rs.html#3086-3088' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method returns an ordering between <code>self</code> and <code>other</code> values if one exists. <a href="../../core/cmp/trait.PartialOrd.html#tymethod.partial_cmp">Read more</a></p>
</div><h4 id='method.lt' class="method"><code id='lt.v'><div class="docblock attributes">#[must_use]
</div>fn <a href='../../core/cmp/trait.PartialOrd.html#method.lt' class='fnname'>lt</a>(&self, other: &Rhs) -> bool</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/cmp.rs.html#772-777' title='goto source code'>[src]</a></h4><div class='docblock'><p>This method tests less than (for <code>self</code> and <code>other</code>) and is used by the <code><</code> operator. <a href="../../core/cmp/trait.PartialOrd.html#method.lt">Read more</a></p>
</div><h4 id='method.le' class="method"><code id='le.v'><div class="docblock attributes">#[must_use]
</div>fn <a href='../../core/cmp/trait.PartialOrd.html#method.le' class='fnname'>le</a>(&self, other: &Rhs) -> bool</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/cmp.rs.html#794-799' title='goto source code'>[src]</a></h4><div class='docblock'><p>This method tests less than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code><=</code> operator. <a href="../../core/cmp/trait.PartialOrd.html#method.le">Read more</a></p>
</div><h4 id='method.gt' class="method"><code id='gt.v'><div class="docblock attributes">#[must_use]
</div>fn <a href='../../core/cmp/trait.PartialOrd.html#method.gt' class='fnname'>gt</a>(&self, other: &Rhs) -> bool</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/cmp.rs.html#815-820' title='goto source code'>[src]</a></h4><div class='docblock'><p>This method tests greater than (for <code>self</code> and <code>other</code>) and is used by the <code>></code> operator. <a href="../../core/cmp/trait.PartialOrd.html#method.gt">Read more</a></p>
</div><h4 id='method.ge' class="method"><code id='ge.v'><div class="docblock attributes">#[must_use]
</div>fn <a href='../../core/cmp/trait.PartialOrd.html#method.ge' class='fnname'>ge</a>(&self, other: &Rhs) -> bool</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/cmp.rs.html#837-842' title='goto source code'>[src]</a></h4><div class='docblock'><p>This method tests greater than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code>>=</code> operator. <a href="../../core/cmp/trait.PartialOrd.html#method.ge">Read more</a></p>
</div></div><h3 id='impl-Clone' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3035-3039' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method hidden"><code id='clone.v'>fn <a href='../../core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> Self</code><a class='srclink' href='../../src/core/ptr.rs.html#3036-3038' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="../../core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method"><code id='clone_from.v'>fn <a href='../../core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: &Self)</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='../../src/core/clone.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="../../core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-From%3C%26%27_%20mut%20T%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, '_> <a class="trait" href="../../core/convert/trait.From.html" title="trait core::convert::From">From</a><&'_ mut T> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-From%3C%26%27_%20mut%20T%3E' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3108-3113' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='../../core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(reference: &mut T) -> Self</code><a class='srclink' href='../../src/core/ptr.rs.html#3110-3112' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-From%3C%26%27_%20T%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, '_> <a class="trait" href="../../core/convert/trait.From.html" title="trait core::convert::From">From</a><&'_ T> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-From%3C%26%27_%20T%3E' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3116-3121' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from-1' class="method hidden"><code id='from.v-1'>fn <a href='../../core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(reference: &T) -> Self</code><a class='srclink' href='../../src/core/ptr.rs.html#3118-3120' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-Hash' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Hash' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3092-3097' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.hash' class="method hidden"><code id='hash.v'>fn <a href='../../core/hash/trait.Hash.html#tymethod.hash' class='fnname'>hash</a><H: <a class="trait" href="../../core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(&self, state: &mut H)</code><a class='srclink' href='../../src/core/ptr.rs.html#3094-3096' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Feeds this value into the given [<code>Hasher</code>]. <a href="../../core/hash/trait.Hash.html#tymethod.hash">Read more</a></p>
</div><h4 id='method.hash_slice' class="method"><code id='hash_slice.v'>fn <a href='../../core/hash/trait.Hash.html#method.hash_slice' class='fnname'>hash_slice</a><H: <a class="trait" href="../../core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(data: &[Self], state: &mut H) <span class="where fmt-newline">where<br> Self: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div><a class='srclink' href='../../src/core/hash/mod.rs.html#193-199' title='goto source code'>[src]</a></h4><div class='docblock'><p>Feeds a slice of this type into the given [<code>Hasher</code>]. <a href="../../core/hash/trait.Hash.html#method.hash_slice">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3051-3055' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='../../core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="type" href="../../core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/core/ptr.rs.html#3052-3054' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="../../core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-Pointer' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../core/fmt/trait.Pointer.html" title="trait core::fmt::Pointer">Pointer</a> for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a href='#impl-Pointer' class='anchor'></a><a class='srclink' href='../../src/core/ptr.rs.html#3058-3062' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt-1' class="method hidden"><code id='fmt.v-1'>fn <a href='../../core/fmt/trait.Pointer.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="type" href="../../core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/core/ptr.rs.html#3059-3061' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter.</p>
</div></div></div><h2 id='blanket-implementations' class='small-section-header'>Blanket Implementations<a href='#blanket-implementations' class='anchor'></a></h2><div id='blanket-implementations-list'><h3 id='impl-Into' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="../../core/convert/trait.Into.html" title="trait core::convert::Into">Into</a> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="../../core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></code><a href='#impl-Into' class='anchor'></a><a class='srclink' href='../../src/core/convert.rs.html#537-542' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='../../core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(Self) -> U</code><a class='srclink' href='../../src/core/convert.rs.html#539-541' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-From' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../core/convert/trait.From.html" title="trait core::convert::From">From</a> for T</code><a href='#impl-From' class='anchor'></a><a class='srclink' href='../../src/core/convert.rs.html#546-548' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from-2' class="method hidden"><code id='from.v-2'>fn <a href='../../core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(T) -> T</code><a class='srclink' href='../../src/core/convert.rs.html#547' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryInto' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="../../core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="../../core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></code><a href='#impl-TryInto' class='anchor'></a><a class='srclink' href='../../src/core/convert.rs.html#553-560' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='../../core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = <U as <a class="trait" href="../../core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="../../core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='../../core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(Self) -> <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="../../core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="../../core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class='srclink' href='../../src/core/convert.rs.html#557-559' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryFrom' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="../../core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="../../core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></code><a href='#impl-TryFrom' class='anchor'></a><a class='srclink' href='../../src/core/convert.rs.html#565-571' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='../../core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="../../core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='../../core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(U) -> <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="../../core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="type" href="../../core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class='srclink' href='../../src/core/convert.rs.html#568-570' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-Borrow' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href='#impl-Borrow' class='anchor'></a><a class='srclink' href='../../src/core/borrow.rs.html#213-215' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='../../core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&Self) -> &T</code><a class='srclink' href='../../src/core/borrow.rs.html#214' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="../../core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id='impl-BorrowMut' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href='#impl-BorrowMut' class='anchor'></a><a class='srclink' href='../../src/core/borrow.rs.html#218-220' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='../../core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&mut Self) -> &mut T</code><a class='srclink' href='../../src/core/borrow.rs.html#219' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="../../core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></div><h3 id='impl-Any' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='../../src/core/any.rs.html#100-102' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='../../core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&Self) -> <a class="struct" href="../../core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='../../src/core/any.rs.html#101' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="../../core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
</div></div></div></section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g., <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g., <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g., <code>str,u8</code> or <code>String,struct:Vec,test</code>)</p></div></div></aside><script>window.rootPath = "../../";window.currentCrate = "core";</script><script src="../../aliases.js"></script><script src="../../main1.35.0.js"></script><script defer src="../../search-index.js"></script></body></html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-release
>
by-pkgid
>
0c2243f8a1696816431e7210e991fa52
>
files
>
12227
