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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `Downcast` trait in crate `downcast_rs`."><meta name="keywords" content="rust, rustlang, rust-lang, Downcast"><title>downcast_rs::Downcast - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../dark.css"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="shortcut icon" href="../favicon.ico"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[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='../downcast_rs/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><p class='location'>Trait Downcast</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.as_any">as_any</a><a href="#tymethod.as_any_mut">as_any_mut</a><a href="#tymethod.into_any">into_any</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='index.html'>downcast_rs</a></p><script>window.sidebarCurrent = {name: 'Downcast', ty: 'trait', 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="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../theme.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="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><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/downcast_rs/lib.rs.html#124-134' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='index.html'>downcast_rs</a>::<wbr><a class="trait" href=''>Downcast</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait Downcast: <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> {
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fn <a href='#tymethod.into_any' class='fnname'>into_any</a>(self: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><Self>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.as_any' class='fnname'>as_any</a>(&self) -> &dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a>;
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<div class='item-spacer'></div> fn <a href='#tymethod.as_any_mut' class='fnname'>as_any_mut</a>(&mut self) -> &mut dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a>;
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}</pre></div><div class='docblock'><p>Supports conversion to <code>Any</code>. Traits to be extended by <code>impl_downcast!</code> must extend <code>Downcast</code>.</p>
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</div>
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<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.into_any' class='method'><code id='into_any.v'>fn <a href='#tymethod.into_any' class='fnname'>into_any</a>(self: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><Self>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</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></h3><div class='docblock'><p>Convert <code>Box<Trait></code> (where <code>Trait: Downcast</code>) to <code>Box<Any></code>. <code>Box<Any></code> can then be
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further <code>downcast</code> into <code>Box<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>.</p>
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</div><h3 id='tymethod.as_any' class='method'><code id='as_any.v'>fn <a href='#tymethod.as_any' class='fnname'>as_any</a>(&self) -> &dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a></code></h3><div class='docblock'><p>Convert <code>&Trait</code> (where <code>Trait: Downcast</code>) to <code>&Any</code>. This is needed since Rust cannot
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generate <code>&Any</code>'s vtable from <code>&Trait</code>'s.</p>
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</div><h3 id='tymethod.as_any_mut' class='method'><code id='as_any_mut.v'>fn <a href='#tymethod.as_any_mut' class='fnname'>as_any_mut</a>(&mut self) -> &mut dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a></code></h3><div class='docblock'><p>Convert <code>&mut Trait</code> (where <code>Trait: Downcast</code>) to <code>&Any</code>. This is needed since Rust cannot
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generate <code>&mut Any</code>'s vtable from <code>&mut Trait</code>'s.</p>
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<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-Downcast' 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>> Downcast for T</code><a href='#impl-Downcast' class='anchor'></a><a class='srclink' href='../src/downcast_rs/lib.rs.html#136-140' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into_any' class="method hidden"><code id='into_any.v-1'>fn <a href='#method.into_any' class='fnname'>into_any</a>(self: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><Self>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</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 class='srclink' href='../src/downcast_rs/lib.rs.html#137' title='goto source code'>[src]</a></h4><h4 id='method.as_any' class="method hidden"><code id='as_any.v-1'>fn <a href='#method.as_any' class='fnname'>as_any</a>(&self) -> &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 class='srclink' href='../src/downcast_rs/lib.rs.html#138' title='goto source code'>[src]</a></h4><h4 id='method.as_any_mut' class="method hidden"><code id='as_any_mut.v-1'>fn <a href='#method.as_any_mut' class='fnname'>as_any_mut</a>(&mut self) -> &mut 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 class='srclink' href='../src/downcast_rs/lib.rs.html#139' title='goto source code'>[src]</a></h4></div></div><span class='loading-content'>Loading content...</span><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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