<!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 `Rc` struct in crate `alloc`."><meta name="keywords" content="rust, rustlang, rust-lang, Rc"><title>alloc::rc::Rc - 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='../../alloc/index.html'><img src='../../rust-logo1.35.0.png' alt='logo' width='100'></a><p class='location'>Struct Rc</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.downcast">downcast</a><a href="#method.downgrade">downgrade</a><a href="#method.from_raw">from_raw</a><a href="#method.get_mut">get_mut</a><a href="#method.into_raw">into_raw</a><a href="#method.into_raw_non_null">into_raw_non_null</a><a href="#method.make_mut">make_mut</a><a href="#method.new">new</a><a href="#method.pin">pin</a><a href="#method.ptr_eq">ptr_eq</a><a href="#method.strong_count">strong_count</a><a href="#method.try_unwrap">try_unwrap</a><a href="#method.weak_count">weak_count</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-AsRef%3CT%3E">AsRef<T></a><a href="#impl-Borrow%3CT%3E">Borrow<T></a><a href="#impl-Clone">Clone</a><a href="#impl-CoerceUnsized%3CRc%3CU%3E%3E">CoerceUnsized<Rc<U>></a><a href="#impl-Debug">Debug</a><a href="#impl-Default">Default</a><a href="#impl-Deref">Deref</a><a href="#impl-DispatchFromDyn%3CRc%3CU%3E%3E">DispatchFromDyn<Rc<U>></a><a href="#impl-Display">Display</a><a href="#impl-Drop">Drop</a><a href="#impl-Eq">Eq</a><a href="#impl-From%3C%26%27_%20%5BT%5D%3E">From<&'_ [T]></a><a href="#impl-From%3C%26%27_%20str%3E">From<&'_ str></a><a href="#impl-From%3CBox%3CT%3E%3E">From<Box<T>></a><a href="#impl-From%3CString%3E">From<String></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-From%3CVec%3CT%3E%3E">From<Vec<T>></a><a href="#impl-Hash">Hash</a><a href="#impl-Ord">Ord</a><a href="#impl-PartialEq%3CRc%3CT%3E%3E">PartialEq<Rc<T>></a><a href="#impl-PartialOrd%3CRc%3CT%3E%3E">PartialOrd<Rc<T>></a><a href="#impl-Pointer">Pointer</a><a href="#impl-Receiver">Receiver</a><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a><a href="#impl-Unpin">Unpin</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-ToOwned">ToOwned</a><a href="#impl-ToString">ToString</a><a href="#impl-TryFrom">TryFrom</a><a href="#impl-TryInto">TryInto</a></div></div><p class='location'><a href='../index.html'>alloc</a>::<wbr><a href='index.html'>rc</a></p><script>window.sidebarCurrent = {name: 'Rc', 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 1.0.0'>1.0.0</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/alloc/rc.rs.html#273-276' title='goto source code'>[src]</a></span><span class='in-band'>Struct <a href='../index.html'>alloc</a>::<wbr><a href='index.html'>rc</a>::<wbr><a class="struct" href=''>Rc</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust struct'><div class="docblock attributes">#[lang = "rc"] </div>pub struct Rc<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> { /* fields omitted */ }</pre></div><div class='docblock'><p>A single-threaded reference-counting pointer. 'Rc' stands for 'Reference Counted'.</p> <p>See the <a href="./index.html">module-level documentation</a> for more details.</p> <p>The inherent methods of <code>Rc</code> are all associated functions, which means that you have to call them as e.g., <a href="#method.get_mut"><code>Rc::get_mut(&mut value)</code></a> instead of <code>value.get_mut()</code>. This avoids conflicts with methods of the inner type <code>T</code>.</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="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#289-363' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.new' class="method"><code id='new.v'>pub fn <a href='#method.new' class='fnname'>new</a>(value: T) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a class='srclink' href='../../src/alloc/rc.rs.html#300-313' title='goto source code'>[src]</a></h4><div class='docblock'><p>Constructs a new <code>Rc<T></code>.</p> <h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>);</pre></div> </div><h4 id='method.pin' class="method"><code id='pin.v'>pub fn <a href='#method.pin' class='fnname'>pin</a>(value: T) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a><<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>></code><div class='since' title='Stable since Rust version 1.33.0'>1.33.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#318-320' title='goto source code'>[src]</a></h4><div class='docblock'><p>Constructs a new <code>Pin<Rc<T>></code>. If <code>T</code> does not implement <code>Unpin</code>, then <code>value</code> will be pinned in memory and unable to be moved.</p> </div><h4 id='method.try_unwrap' class="method"><code id='try_unwrap.v'>pub fn <a href='#method.try_unwrap' class='fnname'>try_unwrap</a>(this: Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, Self></code><div class='since' title='Stable since Rust version 1.4.0'>1.4.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#345-362' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the contained value, if the <code>Rc</code> has exactly one strong reference.</p> <p>Otherwise, an <a href="../../std/result/enum.Result.html"><code>Err</code></a> is returned with the same <code>Rc</code> that was passed in.</p> <p>This will succeed even if there are outstanding weak references.</p> <h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">3</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Rc</span>::<span class="ident">try_unwrap</span>(<span class="ident">x</span>), <span class="prelude-val">Ok</span>(<span class="number">3</span>)); <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">4</span>); <span class="kw">let</span> <span class="ident">_y</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">x</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">Rc</span>::<span class="ident">try_unwrap</span>(<span class="ident">x</span>).<span class="ident">unwrap_err</span>(), <span class="number">4</span>);</pre></div> </div></div><h3 id='impl-1' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-1' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#365-582' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into_raw' class="method"><code id='into_raw.v'>pub fn <a href='#method.into_raw' class='fnname'>into_raw</a>(this: Self) -> *const T</code><div class='since' title='Stable since Rust version 1.17.0'>1.17.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#383-387' title='goto source code'>[src]</a></h4><div class='docblock'><p>Consumes the <code>Rc</code>, returning the wrapped pointer.</p> <p>To avoid a memory leak the pointer must be converted back to an <code>Rc</code> using <a href="struct.Rc.html#method.from_raw"><code>Rc::from_raw</code></a>.</p> <h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">10</span>); <span class="kw">let</span> <span class="ident">x_ptr</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">into_raw</span>(<span class="ident">x</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw">unsafe</span> { <span class="kw-2">*</span><span class="ident">x_ptr</span> }, <span class="number">10</span>);</pre></div> </div><h4 id='method.from_raw' class="method"><code id='from_raw.v'>pub unsafe fn <a href='#method.from_raw' class='fnname'>from_raw</a>(ptr: *const T) -> Self</code><div class='since' title='Stable since Rust version 1.17.0'>1.17.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#418-433' title='goto source code'>[src]</a></h4><div class='docblock'><p>Constructs an <code>Rc</code> from a raw pointer.</p> <p>The raw pointer must have been previously returned by a call to a <a href="struct.Rc.html#method.into_raw"><code>Rc::into_raw</code></a>.</p> <p>This function is unsafe because improper use may lead to memory problems. For example, a double-free may occur if the function is called twice on the same raw pointer.</p> <h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">10</span>); <span class="kw">let</span> <span class="ident">x_ptr</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">into_raw</span>(<span class="ident">x</span>); <span class="kw">unsafe</span> { <span class="comment">// Convert back to an `Rc` to prevent leak.</span> <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">from_raw</span>(<span class="ident">x_ptr</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">x</span>, <span class="number">10</span>); <span class="comment">// Further calls to `Rc::from_raw(x_ptr)` would be memory unsafe.</span> } <span class="comment">// The memory was freed when `x` went out of scope above, so `x_ptr` is now dangling!</span></pre></div> </div><h4 id='method.into_raw_non_null' class="method"><code id='into_raw_non_null.v'>pub fn <a href='#method.into_raw_non_null' class='fnname'>into_raw_non_null</a>(this: Self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code><a class='srclink' href='../../src/alloc/rc.rs.html#451-454' 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>rc_into_raw_non_null</code> <a href="https://github.com/rust-lang/rust/issues/47336">#47336</a>)</div></div><div class='docblock'><p>Consumes the <code>Rc</code>, returning the wrapped pointer as <code>NonNull<T></code>.</p> <h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="attribute">#![<span class="ident">feature</span>(<span class="ident">rc_into_raw_non_null</span>)]</span> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">10</span>); <span class="kw">let</span> <span class="ident">ptr</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">into_raw_non_null</span>(<span class="ident">x</span>); <span class="kw">let</span> <span class="ident">deref</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="kw-2">*</span><span class="ident">ptr</span>.<span class="ident">as_ref</span>() }; <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">deref</span>, <span class="number">10</span>);</pre></div> </div><h4 id='method.downgrade' class="method"><code id='downgrade.v'>pub fn <a href='#method.downgrade' class='fnname'>downgrade</a>(this: &Self) -> <a class="struct" href="../../alloc/rc/struct.Weak.html" title="struct alloc::rc::Weak">Weak</a><T></code><div class='since' title='Stable since Rust version 1.4.0'>1.4.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#470-475' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a new <a href="struct.Weak.html"><code>Weak</code></a> pointer to this value.</p> <h1 id="examples-5" class="section-header"><a href="#examples-5">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="kw">let</span> <span class="ident">weak_five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">downgrade</span>(<span class="kw-2">&</span><span class="ident">five</span>);</pre></div> </div><h4 id='method.weak_count' class="method"><code id='weak_count.v'>pub fn <a href='#method.weak_count' class='fnname'>weak_count</a>(this: &Self) -> usize</code><div class='since' title='Stable since Rust version 1.15.0'>1.15.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#493-495' title='goto source code'>[src]</a></h4><div class='docblock'><p>Gets the number of <a href="struct.Weak.html"><code>Weak</code></a> pointers to this value.</p> <h1 id="examples-6" class="section-header"><a href="#examples-6">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="kw">let</span> <span class="ident">_weak_five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">downgrade</span>(<span class="kw-2">&</span><span class="ident">five</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">1</span>, <span class="ident">Rc</span>::<span class="ident">weak_count</span>(<span class="kw-2">&</span><span class="ident">five</span>));</pre></div> </div><h4 id='method.strong_count' class="method"><code id='strong_count.v'>pub fn <a href='#method.strong_count' class='fnname'>strong_count</a>(this: &Self) -> usize</code><div class='since' title='Stable since Rust version 1.15.0'>1.15.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#511-513' title='goto source code'>[src]</a></h4><div class='docblock'><p>Gets the number of strong (<code>Rc</code>) pointers to this value.</p> <h1 id="examples-7" class="section-header"><a href="#examples-7">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="kw">let</span> <span class="ident">_also_five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">five</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">Rc</span>::<span class="ident">strong_count</span>(<span class="kw-2">&</span><span class="ident">five</span>));</pre></div> </div><h4 id='method.get_mut' class="method"><code id='get_mut.v'>pub fn <a href='#method.get_mut' class='fnname'>get_mut</a>(this: &mut Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut T></code><div class='since' title='Stable since Rust version 1.4.0'>1.4.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#552-560' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns a mutable reference to the inner value, if there are no other <code>Rc</code> or <a href="struct.Weak.html"><code>Weak</code></a> pointers to the same value.</p> <p>Returns <a href="../../std/option/enum.Option.html#variant.None"><code>None</code></a> otherwise, because it is not safe to mutate a shared value.</p> <p>See also <a href="struct.Rc.html#method.make_mut"><code>make_mut</code></a>, which will <a href="../../std/clone/trait.Clone.html#tymethod.clone"><code>clone</code></a> the inner value when it's shared.</p> <h1 id="examples-8" class="section-header"><a href="#examples-8">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">x</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">3</span>); <span class="kw-2">*</span><span class="ident">Rc</span>::<span class="ident">get_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">x</span>).<span class="ident">unwrap</span>() <span class="op">=</span> <span class="number">4</span>; <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">x</span>, <span class="number">4</span>); <span class="kw">let</span> <span class="ident">_y</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">x</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">Rc</span>::<span class="ident">get_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">x</span>).<span class="ident">is_none</span>());</pre></div> </div><h4 id='method.ptr_eq' class="method"><code id='ptr_eq.v'>pub fn <a href='#method.ptr_eq' class='fnname'>ptr_eq</a>(this: &Self, other: &Self) -> bool</code><div class='since' title='Stable since Rust version 1.17.0'>1.17.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#579-581' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns <code>true</code> if the two <code>Rc</code>s point to the same value (not just values that compare as equal).</p> <h1 id="examples-9" class="section-header"><a href="#examples-9">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="kw">let</span> <span class="ident">same_five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">five</span>); <span class="kw">let</span> <span class="ident">other_five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">Rc</span>::<span class="ident">ptr_eq</span>(<span class="kw-2">&</span><span class="ident">five</span>, <span class="kw-2">&</span><span class="ident">same_five</span>)); <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">Rc</span>::<span class="ident">ptr_eq</span>(<span class="kw-2">&</span><span class="ident">five</span>, <span class="kw-2">&</span><span class="ident">other_five</span>));</pre></div> </div></div><h3 id='impl-2' class='impl'><code class='in-band'>impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-2' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#584-641' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.make_mut' class="method"><code id='make_mut.v'>pub fn <a href='#method.make_mut' class='fnname'>make_mut</a>(this: &mut Self) -> &mut T</code><div class='since' title='Stable since Rust version 1.4.0'>1.4.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#616-640' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a mutable reference into the given <code>Rc</code>.</p> <p>If there are other <code>Rc</code> or <a href="struct.Weak.html"><code>Weak</code></a> pointers to the same value, then <code>make_mut</code> will invoke <a href="../../std/clone/trait.Clone.html#tymethod.clone"><code>clone</code></a> on the inner value to ensure unique ownership. This is also referred to as clone-on-write.</p> <p>See also <a href="struct.Rc.html#method.get_mut"><code>get_mut</code></a>, which will fail rather than cloning.</p> <h1 id="examples-10" class="section-header"><a href="#examples-10">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">data</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="kw-2">*</span><span class="ident">Rc</span>::<span class="ident">make_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">data</span>) <span class="op">+=</span> <span class="number">1</span>; <span class="comment">// Won't clone anything</span> <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">other_data</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">data</span>); <span class="comment">// Won't clone inner data</span> <span class="kw-2">*</span><span class="ident">Rc</span>::<span class="ident">make_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">data</span>) <span class="op">+=</span> <span class="number">1</span>; <span class="comment">// Clones inner data</span> <span class="kw-2">*</span><span class="ident">Rc</span>::<span class="ident">make_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">data</span>) <span class="op">+=</span> <span class="number">1</span>; <span class="comment">// Won't clone anything</span> <span class="kw-2">*</span><span class="ident">Rc</span>::<span class="ident">make_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">other_data</span>) <span class="op">*=</span> <span class="number">2</span>; <span class="comment">// Won't clone anything</span> <span class="comment">// Now `data` and `other_data` point to different values.</span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">data</span>, <span class="number">8</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">other_data</span>, <span class="number">12</span>);</pre></div> </div></div><h3 id='impl-3' class='impl'><code class='in-band'>impl <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a>></code><a href='#impl-3' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#643-675' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.downcast' class="method"><code id='downcast.v'>pub fn <a href='#method.downcast' class='fnname'>downcast</a><T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a>>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>, <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a>>></code><div class='since' title='Stable since Rust version 1.29.0'>1.29.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#666-674' title='goto source code'>[src]</a></h4><div class='docblock'><p>Attempt to downcast the <code>Rc<dyn Any></code> to a concrete type.</p> <h1 id="examples-11" class="section-header"><a href="#examples-11">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">any</span>::<span class="ident">Any</span>; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">fn</span> <span class="ident">print_if_string</span>(<span class="ident">value</span>: <span class="ident">Rc</span><span class="op"><</span><span class="kw">dyn</span> <span class="ident">Any</span><span class="op">></span>) { <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">string</span>) <span class="op">=</span> <span class="ident">value</span>.<span class="ident">downcast</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>() { <span class="macro">println</span><span class="macro">!</span>(<span class="string">"String ({}): {}"</span>, <span class="ident">string</span>.<span class="ident">len</span>(), <span class="ident">string</span>); } } <span class="kw">fn</span> <span class="ident">main</span>() { <span class="kw">let</span> <span class="ident">my_string</span> <span class="op">=</span> <span class="string">"Hello World"</span>.<span class="ident">to_string</span>(); <span class="ident">print_if_string</span>(<span class="ident">Rc</span>::<span class="ident">new</span>(<span class="ident">my_string</span>)); <span class="ident">print_if_string</span>(<span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">0i8</span>)); }</pre></div> </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-Deref' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Deref' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#815-822' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Target' class="type"><code id='Target.t'>type <a href='https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#associatedtype.Target' class="type">Target</a> = T</code></h4><div class='docblock'><p>The resulting type after dereferencing.</p> </div><h4 id='method.deref' class="method hidden"><code id='deref.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#tymethod.deref' class='fnname'>deref</a>(&self) -> &T</code><a class='srclink' href='../../src/alloc/rc.rs.html#819-821' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Dereferences the value.</p> </div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../../alloc/fmt/trait.Debug.html" title="trait alloc::fmt::Debug">Debug</a>> <a class="trait" href="../../alloc/fmt/trait.Debug.html" title="trait alloc::fmt::Debug">Debug</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#1127-1131' 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='../../alloc/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../alloc/fmt/struct.Formatter.html" title="struct alloc::fmt::Formatter">Formatter</a>) -> <a class="type" href="../../alloc/fmt/type.Result.html" title="type alloc::fmt::Result">Result</a></code><a class='srclink' href='../../src/alloc/rc.rs.html#1128-1130' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="../../alloc/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p> </div></div><h3 id='impl-Display' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../../alloc/fmt/trait.Display.html" title="trait alloc::fmt::Display">Display</a>> <a class="trait" href="../../alloc/fmt/trait.Display.html" title="trait alloc::fmt::Display">Display</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Display' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#1120-1124' 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='../../alloc/fmt/trait.Display.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../alloc/fmt/struct.Formatter.html" title="struct alloc::fmt::Formatter">Formatter</a>) -> <a class="type" href="../../alloc/fmt/type.Result.html" title="type alloc::fmt::Result">Result</a></code><a class='srclink' href='../../src/alloc/rc.rs.html#1121-1123' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="../../alloc/fmt/trait.Display.html#tymethod.fmt">Read more</a></p> </div></div><h3 id='impl-PartialEq%3CRc%3CT%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-PartialEq%3CRc%3CT%3E%3E' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#949-991' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.eq' class="method"><code id='eq.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> bool</code><a class='srclink' href='../../src/alloc/rc.rs.html#967-969' title='goto source code'>[src]</a></h4><div class='docblock'><p>Equality for two <code>Rc</code>s.</p> <p>Two <code>Rc</code>s are equal if their inner values are equal.</p> <p>If <code>T</code> also implements <code>Eq</code>, two <code>Rc</code>s that point to the same value are always equal.</p> <h1 id="examples-12" class="section-header"><a href="#examples-12">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">five</span> <span class="op">==</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>));</pre></div> </div><h4 id='method.ne' class="method"><code id='ne.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> bool</code><a class='srclink' href='../../src/alloc/rc.rs.html#988-990' title='goto source code'>[src]</a></h4><div class='docblock'><p>Inequality for two <code>Rc</code>s.</p> <p>Two <code>Rc</code>s are unequal if their inner values are unequal.</p> <p>If <code>T</code> also implements <code>Eq</code>, two <code>Rc</code>s that point to the same value are never unequal.</p> <h1 id="examples-13" class="section-header"><a href="#examples-13">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">five</span> <span class="op">!=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">6</span>));</pre></div> </div></div><h3 id='impl-Eq' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Eq' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#994' 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="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Ord' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#1091-1110' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.cmp' class="method"><code id='cmp.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#tymethod.cmp' class='fnname'>cmp</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></code><a class='srclink' href='../../src/alloc/rc.rs.html#1107-1109' title='goto source code'>[src]</a></h4><div class='docblock'><p>Comparison for two <code>Rc</code>s.</p> <p>The two are compared by calling <code>cmp()</code> on their inner values.</p> <h1 id="examples-14" class="section-header"><a href="#examples-14">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cmp</span>::<span class="ident">Ordering</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Ordering</span>::<span class="ident">Less</span>, <span class="ident">five</span>.<span class="ident">cmp</span>(<span class="kw-2">&</span><span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">6</span>)));</pre></div> </div><h4 id='method.max' class="method"><code id='max.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.max' class='fnname'>max</a>(self, other: Self) -> Self</code><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.min' class='fnname'>min</a>(self, other: Self) -> Self</code><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.clamp' class='fnname'>clamp</a>(self, min: Self, max: Self) -> Self</code><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.clamp">Read more</a></p> </div></div><h3 id='impl-PartialOrd%3CRc%3CT%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a><<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-PartialOrd%3CRc%3CT%3E%3E' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#997-1088' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.partial_cmp' class="method"><code id='partial_cmp.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp' class='fnname'>partial_cmp</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>></code><a class='srclink' href='../../src/alloc/rc.rs.html#1013-1015' title='goto source code'>[src]</a></h4><div class='docblock'><p>Partial comparison for two <code>Rc</code>s.</p> <p>The two are compared by calling <code>partial_cmp()</code> on their inner values.</p> <h1 id="examples-15" class="section-header"><a href="#examples-15">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cmp</span>::<span class="ident">Ordering</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="ident">Ordering</span>::<span class="ident">Less</span>), <span class="ident">five</span>.<span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">6</span>)));</pre></div> </div><h4 id='method.lt' class="method"><code id='lt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.lt' class='fnname'>lt</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> bool</code><a class='srclink' href='../../src/alloc/rc.rs.html#1031-1033' title='goto source code'>[src]</a></h4><div class='docblock'><p>Less-than comparison for two <code>Rc</code>s.</p> <p>The two are compared by calling <code><</code> on their inner values.</p> <h1 id="examples-16" class="section-header"><a href="#examples-16">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">five</span> <span class="op"><</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">6</span>));</pre></div> </div><h4 id='method.le' class="method"><code id='le.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.le' class='fnname'>le</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> bool</code><a class='srclink' href='../../src/alloc/rc.rs.html#1049-1051' title='goto source code'>[src]</a></h4><div class='docblock'><p>'Less than or equal to' comparison for two <code>Rc</code>s.</p> <p>The two are compared by calling <code><=</code> on their inner values.</p> <h1 id="examples-17" class="section-header"><a href="#examples-17">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">five</span> <span class="op"><=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>));</pre></div> </div><h4 id='method.gt' class="method"><code id='gt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.gt' class='fnname'>gt</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> bool</code><a class='srclink' href='../../src/alloc/rc.rs.html#1067-1069' title='goto source code'>[src]</a></h4><div class='docblock'><p>Greater-than comparison for two <code>Rc</code>s.</p> <p>The two are compared by calling <code>></code> on their inner values.</p> <h1 id="examples-18" class="section-header"><a href="#examples-18">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">five</span> <span class="op">></span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">4</span>));</pre></div> </div><h4 id='method.ge' class="method"><code id='ge.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.ge' class='fnname'>ge</a>(&self, other: &<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T>) -> bool</code><a class='srclink' href='../../src/alloc/rc.rs.html#1085-1087' title='goto source code'>[src]</a></h4><div class='docblock'><p>'Greater than or equal to' comparison for two <code>Rc</code>s.</p> <p>The two are compared by calling <code>>=</code> on their inner values.</p> <h1 id="examples-19" class="section-header"><a href="#examples-19">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">five</span> <span class="op">>=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>));</pre></div> </div></div><h3 id='impl-CoerceUnsized%3CRc%3CU%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unsize.html" title="trait core::marker::Unsize">Unsize</a><U>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/unsize/trait.CoerceUnsized.html" title="trait core::ops::unsize::CoerceUnsized">CoerceUnsized</a><<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><U>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-CoerceUnsized%3CRc%3CU%3E%3E' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#284' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-DispatchFromDyn%3CRc%3CU%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unsize.html" title="trait core::marker::Unsize">Unsize</a><U>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/unsize/trait.DispatchFromDyn.html" title="trait core::ops::unsize::DispatchFromDyn">DispatchFromDyn</a><<a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><U>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-DispatchFromDyn%3CRc%3CU%3E%3E' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#287' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-From%3CT%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-From%3CT%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.6.0'>1.6.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1141-1145' 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='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -> Self</code><a class='srclink' href='../../src/alloc/rc.rs.html#1142-1144' 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_%20%5BT%5D%3E' class='impl'><code class='in-band'>impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, '_> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><&'_ [T]> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><[T]></code><a href='#impl-From%3C%26%27_%20%5BT%5D%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1148-1153' 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='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(v: &[T]) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><[T]></code><a class='srclink' href='../../src/alloc/rc.rs.html#1150-1152' 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_%20str%3E' class='impl'><code class='in-band'>impl<'_> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><&'_ str> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><str></code><a href='#impl-From%3C%26%27_%20str%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1156-1162' 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='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(v: &str) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><str></code><a class='srclink' href='../../src/alloc/rc.rs.html#1158-1161' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p> </div></div><h3 id='impl-From%3CString%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="../../alloc/string/struct.String.html" title="struct alloc::string::String">String</a>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><str></code><a href='#impl-From%3CString%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1165-1170' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from-3' class="method hidden"><code id='from.v-3'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(v: <a class="struct" href="../../alloc/string/struct.String.html" title="struct alloc::string::String">String</a>) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><str></code><a class='srclink' href='../../src/alloc/rc.rs.html#1167-1169' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p> </div></div><h3 id='impl-From%3CBox%3CT%3E%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="../../alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><T>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-From%3CBox%3CT%3E%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1173-1178' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from-4' class="method hidden"><code id='from.v-4'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(v: <a class="struct" href="../../alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><T>) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a class='srclink' href='../../src/alloc/rc.rs.html#1175-1177' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p> </div></div><h3 id='impl-From%3CVec%3CT%3E%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="../../alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><T>> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><[T]></code><a href='#impl-From%3CVec%3CT%3E%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1181-1193' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from-5' class="method hidden"><code id='from.v-5'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(v: <a class="struct" href="../../alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><T>) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><[T]></code><a class='srclink' href='../../src/alloc/rc.rs.html#1183-1192' 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="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Hash' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#1113-1117' 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='https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash' class='fnname'>hash</a><H: <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(&self, state: &mut H)</code><a class='srclink' href='../../src/alloc/rc.rs.html#1114-1116' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Feeds this value into the given [<code>Hasher</code>]. <a href="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice' class='fnname'>hash_slice</a><H>(data: &[Self], state: &mut H) <span class="where fmt-newline">where<br> H: <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>, </span></code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice">Read more</a></p> </div></div><h3 id='impl-Send' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Send' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#279' 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="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Sync' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#281' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Unpin' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Unpin' class='anchor'></a><div class='since' title='Stable since Rust version 1.33.0'>1.33.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#2004' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Receiver' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Receiver for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Receiver' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#825' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Drop' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Drop' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#828-873' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.drop' class="method"><code id='drop.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop' class='fnname'>drop</a>(&mut self)</code><a class='srclink' href='../../src/alloc/rc.rs.html#856-872' title='goto source code'>[src]</a></h4><div class='docblock'><p>Drops the <code>Rc</code>.</p> <p>This will decrement the strong reference count. If the strong reference count reaches zero then the only other references (if any) are <a href="../../std/rc/struct.Weak.html"><code>Weak</code></a>, so we <code>drop</code> the inner value.</p> <h1 id="examples-20" class="section-header"><a href="#examples-20">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">struct</span> <span class="ident">Foo</span>; <span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">Foo</span> { <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { <span class="macro">println</span><span class="macro">!</span>(<span class="string">"dropped!"</span>); } } <span class="kw">let</span> <span class="ident">foo</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="ident">Foo</span>); <span class="kw">let</span> <span class="ident">foo2</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">foo</span>); <span class="ident">drop</span>(<span class="ident">foo</span>); <span class="comment">// Doesn't print anything</span> <span class="ident">drop</span>(<span class="ident">foo2</span>); <span class="comment">// Prints "dropped!"</span></pre></div> </div></div><h3 id='impl-Pointer' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../alloc/fmt/trait.Pointer.html" title="trait alloc::fmt::Pointer">Pointer</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Pointer' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#1134-1138' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt-2' class="method hidden"><code id='fmt.v-2'>fn <a href='../../alloc/fmt/trait.Pointer.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../alloc/fmt/struct.Formatter.html" title="struct alloc::fmt::Formatter">Formatter</a>) -> <a class="type" href="../../alloc/fmt/type.Result.html" title="type alloc::fmt::Result">Result</a></code><a class='srclink' href='../../src/alloc/rc.rs.html#1135-1137' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter.</p> </div></div><h3 id='impl-Clone' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#876-896' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method"><code id='clone.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a class='srclink' href='../../src/alloc/rc.rs.html#892-895' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a clone of the <code>Rc</code> pointer.</p> <p>This creates another pointer to the same inner value, increasing the strong reference count.</p> <h1 id="examples-21" class="section-header"><a href="#examples-21">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">five</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="number">5</span>); <span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">five</span>);</pre></div> </div><h4 id='method.clone_from' class="method"><code id='clone_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: &Self)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p> </div></div><h3 id='impl-AsRef%3CT%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><T> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-AsRef%3CT%3E' class='anchor'></a><div class='since' title='Stable since Rust version 1.5.0'>1.5.0</div><a class='srclink' href='../../src/alloc/rc.rs.html#1997-2001' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.as_ref' class="method hidden"><code id='as_ref.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html#tymethod.as_ref' class='fnname'>as_ref</a>(&self) -> &T</code><a class='srclink' href='../../src/alloc/rc.rs.html#1998-2000' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p> </div></div><h3 id='impl-Default' class='impl'><code class='in-band'>impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Default' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#899-914' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.default' class="method"><code id='default.v'>fn <a href='https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -> <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a class='srclink' href='../../src/alloc/rc.rs.html#911-913' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a new <code>Rc<T></code>, with the <code>Default</code> value for <code>T</code>.</p> <h1 id="examples-22" class="section-header"><a href="#examples-22">Examples</a></h1> <div class="example-wrap"><pre class="rust rust-example-rendered"> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; <span class="kw">let</span> <span class="ident">x</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>(); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">*</span><span class="ident">x</span>, <span class="number">0</span>);</pre></div> </div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="../../alloc/borrow/trait.Borrow.html" title="trait alloc::borrow::Borrow">Borrow</a><T> for <a class="struct" href="../../alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><T></code><a href='#impl-Borrow%3CT%3E' class='anchor'></a><a class='srclink' href='../../src/alloc/rc.rs.html#1990-1994' 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='../../alloc/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&self) -> &T</code><a class='srclink' href='../../src/alloc/rc.rs.html#1991-1993' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="../../alloc/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></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-ToOwned' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, </span></code><a href='#impl-ToOwned' class='anchor'></a><a class='srclink' href='../../src/alloc/borrow.rs.html#80-91' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Owned' class="type"><code id='Owned.t'>type <a href='../../alloc/borrow/trait.ToOwned.html#associatedtype.Owned' class="type">Owned</a> = T</code></h4><h4 id='method.to_owned' class="method hidden"><code id='to_owned.v'>fn <a href='../../alloc/borrow/trait.ToOwned.html#tymethod.to_owned' class='fnname'>to_owned</a>(&Self) -> T</code><a class='srclink' href='../../src/alloc/borrow.rs.html#84-86' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="../../alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p> </div><h4 id='method.clone_into' class="method hidden"><code id='clone_into.v'>fn <a href='../../alloc/borrow/trait.ToOwned.html#method.clone_into' class='fnname'>clone_into</a>(&Self, &mut T)</code><a class='srclink' href='../../src/alloc/borrow.rs.html#88-90' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code> <a href="https://github.com/rust-lang/rust/issues/41263">#41263</a>)</summary><p>recently added</p> </details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="../../alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p> </div></div><h3 id='impl-ToString' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T <span class="where fmt-newline">where<br> T: <a class="trait" href="../../alloc/fmt/trait.Display.html" title="trait alloc::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href='#impl-ToString' class='anchor'></a><a class='srclink' href='../../src/alloc/string.rs.html#2122-2132' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.to_string' class="method hidden"><code id='to_string.v'>default fn <a href='../../alloc/string/trait.ToString.html#tymethod.to_string' class='fnname'>to_string</a>(&Self) -> <a class="struct" href="../../alloc/string/struct.String.html" title="struct alloc::string::String">String</a></code><a class='srclink' href='../../src/alloc/string.rs.html#2124-2131' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Converts the given value to a <code>String</code>. <a href="../../alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></p> </div></div><h3 id='impl-TryFrom' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#565-571' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/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-From' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#546-548' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from-6' class="method hidden"><code id='from.v-6'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -> T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#553-560' 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='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/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-Into' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -> U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/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-Borrow' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../alloc/borrow/trait.Borrow.html" title="trait alloc::borrow::Borrow">Borrow</a> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-215' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow-1' class="method hidden"><code id='borrow.v-1'>fn <a href='../../alloc/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&self) -> &T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/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="../../alloc/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="../../alloc/borrow/trait.BorrowMut.html" title="trait alloc::borrow::BorrowMut">BorrowMut</a> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/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='../../alloc/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&mut self) -> &mut T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/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="../../alloc/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="https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/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='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p> </div></div></div></section><section 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