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168 lines
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<meta name="description" content="API documentation for the Rust `Wait` struct in crate `futures`.">
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<title>futures::sink::Wait - Rust</title>
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<div class="sidebar-menu">☰</div>
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<p class='location'>Struct Wait</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.send">send</a><a href="#method.flush">flush</a><a href="#method.close">close</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a></div></div><p class='location'><a href='../index.html'>futures</a>::<wbr><a href='index.html'>sink</a></p><script>window.sidebarCurrent = {name: 'Wait', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>futures</a>::<wbr><a href='index.html'>sink</a>::<wbr><a class="struct" href=''>Wait</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/futures/sink/wait.rs.html#12-14' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'><div class="docblock attributes">#[must_use = "sinks do nothing unless used"]
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</div>pub struct Wait<S> { /* fields omitted */ }</pre><div class='docblock'><p>A sink combinator which converts an asynchronous sink to a <strong>blocking
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sink</strong>.</p>
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<p>Created by the <code>Sink::wait</code> method, this function transforms any sink into a
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blocking version. This is implemented by blocking the current thread when a
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sink is otherwise unable to make progress.</p>
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</div>
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<h2 id='methods' class='small-section-header'>
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Methods<a href='#methods' class='anchor'></a>
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</h2>
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<h3 id='impl' class='impl'><span class='in-band'><code>impl<S: <a class="trait" href="../../futures/sink/trait.Sink.html" title="trait futures::sink::Sink">Sink</a>> <a class="struct" href="../../futures/sink/struct.Wait.html" title="struct futures::sink::Wait">Wait</a><S></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/sink/wait.rs.html#22-59' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.send' class="method"><span id='send.v' class='invisible'><code>pub fn <a href='#method.send' class='fnname'>send</a>(&mut self, value: S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkItem" title="type futures::sink::Sink::SinkItem">SinkItem</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/sink/wait.rs.html#36-38' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Sends a value to this sink, blocking the current thread until it's able
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to do so.</p>
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<p>This function will take the <code>value</code> provided and call the underlying
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sink's <code>start_send</code> function until it's ready to accept the value. If
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the function returns <code>NotReady</code> then the current thread is blocked
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until it is otherwise ready to accept the value.</p>
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<h1 id="return-value" class="section-header"><a href="#return-value">Return value</a></h1>
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<p>If <code>Ok(())</code> is returned then the <code>value</code> provided was successfully sent
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along the sink, and if <code>Err(e)</code> is returned then an error occurred
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which prevented the value from being sent.</p>
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</div><h4 id='method.flush' class="method"><span id='flush.v' class='invisible'><code>pub fn <a href='#method.flush' class='fnname'>flush</a>(&mut 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="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/sink/wait.rs.html#47-49' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Flushes any buffered data in this sink, blocking the current thread
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until it's entirely flushed.</p>
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<p>This function will call the underlying sink's <code>poll_complete</code> method
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until it returns that it's ready to proceed. If the method returns
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<code>NotReady</code> the current thread will be blocked until it's otherwise
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ready to proceed.</p>
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</div><h4 id='method.close' class="method"><span id='close.v' class='invisible'><code>pub fn <a href='#method.close' class='fnname'>close</a>(&mut 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="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/sink/wait.rs.html#56-58' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Close this sink, blocking the current thread until it's entirely closed.</p>
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<p>This function will call the underlying sink's <code>close</code> method
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until it returns that it's closed. If the method returns
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<code>NotReady</code> the current thread will be blocked until it's otherwise closed.</p>
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</div></div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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</h2>
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<h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl<S: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../futures/sink/struct.Wait.html" title="struct futures::sink::Wait">Wait</a><S></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/sink/wait.rs.html#11' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/sink/wait.rs.html#11' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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