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<meta name="description" content="API documentation for the Rust `Plugin` trait in crate `iron`.">
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<a href='../iron/index.html'><img src='https://avatars0.githubusercontent.com/u/7853871?s=128' alt='logo' width='100'></a>
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<p class='location'><a href='index.html'>iron</a></p><script>window.sidebarCurrent = {name: 'Plugin', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content trait">
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<h1 class='fqn'><span class='in-band'>Trait <a href='index.html'>iron</a>::<wbr><a class='trait' href=''>Plugin</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a id='src-17' class='srclink' href='../plugin/trait.Pluggable.html?gotosrc=17' title='goto source code'>[src]</a></span></h1>
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<pre class='rust trait'>pub trait Plugin {
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fn <a href='#method.get' class='fnname'>get</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self>, Self: <a class='trait' href='../plugin/trait.Extensible.html' title='plugin::Extensible'>Extensible</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html' title='core::clone::Clone'>Clone</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html' title='core::any::Any'>Any</a></span> { ... }
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fn <a href='#method.get_ref' class='fnname'>get_ref</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><&P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self>, Self: <a class='trait' href='../plugin/trait.Extensible.html' title='plugin::Extensible'>Extensible</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html' title='core::any::Any'>Any</a></span> { ... }
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fn <a href='#method.get_mut' class='fnname'>get_mut</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><&mut P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self>, Self: <a class='trait' href='../plugin/trait.Extensible.html' title='plugin::Extensible'>Extensible</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html' title='core::any::Any'>Any</a></span> { ... }
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fn <a href='#method.compute' class='fnname'>compute</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self></span> { ... }
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}</pre><div class='docblock'><p>An interface for plugins that cache values between calls.</p>
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<p><code>R</code> is the type of the plugin's return value, which must be cloneable.</p>
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</div>
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<h2 id='provided-methods'>Provided Methods</h2>
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<div class='methods'>
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<h3 id='method.get' class='method stab '><code>fn <a href='#method.get' class='fnname'>get</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self>, Self: <a class='trait' href='../plugin/trait.Extensible.html' title='plugin::Extensible'>Extensible</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html' title='core::clone::Clone'>Clone</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html' title='core::any::Any'>Any</a></span></code></h3><div class='docblock'><p>Return a copy of the plugin's produced value.</p>
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<p>The plugin will be created if it doesn't exist already.
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If plugin creation fails, an error is returned.</p>
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<p><code>P</code> is the plugin type.</p>
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</div><h3 id='method.get_ref' class='method stab '><code>fn <a href='#method.get_ref' class='fnname'>get_ref</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><&P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self>, Self: <a class='trait' href='../plugin/trait.Extensible.html' title='plugin::Extensible'>Extensible</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html' title='core::any::Any'>Any</a></span></code></h3><div class='docblock'><p>Return a reference to the plugin's produced value.</p>
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<p>The plugin will be created if it doesn't exist already.
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If plugin creation fails an error is returned.</p>
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<p><code>P</code> is the plugin type.</p>
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</div><h3 id='method.get_mut' class='method stab '><code>fn <a href='#method.get_mut' class='fnname'>get_mut</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><&mut P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self>, Self: <a class='trait' href='../plugin/trait.Extensible.html' title='plugin::Extensible'>Extensible</a>, P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>: <a class='trait' href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html' title='core::any::Any'>Any</a></span></code></h3><div class='docblock'><p>Return a mutable reference to the plugin's produced value.</p>
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<p>The plugin will be created if it doesn't exist already.
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If plugin creation fail an error is returned.</p>
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<p><code>P</code> is the plugin type.</p>
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</div><h3 id='method.compute' class='method stab '><code>fn <a href='#method.compute' class='fnname'>compute</a><P>(&mut self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><P::<a class='trait' href='../iron/typemap/trait.Key.html' title='iron::typemap::Key'>Value</a>, P::<a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Error</a>> <span class='where'>where P: <a class='trait' href='../plugin/trait.Plugin.html' title='plugin::Plugin'>Plugin</a><Self></span></code></h3><div class='docblock'><p>Create and evaluate a once-off instance of a plugin.</p>
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</div></div>
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<h2 id='implementors'>Implementors</h2>
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<ul class='item-list' id='implementors-list'>
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<li><code>impl Plugin for <a class='struct' href='../iron/response/struct.Response.html' title='iron::response::Response'>Response</a></code></li>
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<li><code>impl<'a, 'b> Plugin for <a class='struct' href='../iron/request/struct.Request.html' title='iron::request::Request'>Request</a><'a, 'b></code></li>
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</ul><script type="text/javascript" async
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src="../implementors/plugin/trait.Plugin.js">
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</script></section>
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<section id='search' class="content hidden"></section>
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<section class="footer"></section>
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<aside id="help" class="hidden">
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<div>
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<h1 class="hidden">Help</h1>
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<div class="shortcuts">
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<h2>Keyboard Shortcuts</h2>
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<dl>
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<dt>?</dt>
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<dd>Show this help dialog</dd>
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<dt>S</dt>
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<dd>Focus the search field</dd>
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<dt>⇤</dt>
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<dd>Move up in search results</dd>
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<dt>⇥</dt>
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<dd>Move down in search results</dd>
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<dt>⏎</dt>
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<dd>Go to active search result</dd>
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<dt>+</dt>
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<dd>Collapse/expand all sections</dd>
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</dl>
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</div>
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<div class="infos">
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<h2>Search Tricks</h2>
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<p>
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Prefix searches with a type followed by a colon (e.g.
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<code>fn:</code>) to restrict the search to a given type.
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</p>
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<p>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>struct</code>, <code>enum</code>,
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<code>trait</code>, <code>type</code>, <code>macro</code>,
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and <code>const</code>.
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</p>
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<p>
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Search functions by type signature (e.g.
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<code>vec -> usize</code> or <code>* -> vec</code>)
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</p>
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</aside>
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<script>
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window.rootPath = "../";
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window.currentCrate = "iron";
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window.playgroundUrl = "";
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</script>
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