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    <title>futures::unsync::oneshot::Sender - Rust</title>

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        <p class='location'>Struct Sender</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.poll_cancel">poll_cancel</a><a href="#method.is_canceled">is_canceled</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a><a href="#impl-Drop">Drop</a></div></div><p class='location'><a href='../../index.html'>futures</a>::<wbr><a href='../index.html'>unsync</a>::<wbr><a href='index.html'>oneshot</a></p><script>window.sidebarCurrent = {name: 'Sender', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../../index.html'>futures</a>::<wbr><a href='../index.html'>unsync</a>::<wbr><a href='index.html'>oneshot</a>::<wbr><a class="struct" href=''>Sender</a></span><span class='out-of-band'><span id='render-detail'>
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                       [<span class='inner'>&#x2212;</span>]
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               </span><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#40-42' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct Sender&lt;T&gt; { /* fields omitted */ }</pre><div class='docblock'><p>Represents the completion half of a oneshot through which the result of a
computation is signaled.</p>
<p>This is created by the <code>unsync::oneshot::channel</code> function and is equivalent
in functionality to <code>sync::oneshot::Sender</code> except that it cannot be sent
across threads.</p>
</div>
                    <h2 id='methods' class='small-section-header'>
                      Methods<a href='#methods' class='anchor'></a>
                    </h2>
                <h3 id='impl' class='impl'><span class='in-band'><code>impl&lt;T&gt; <a class="struct" href="../../../futures/unsync/oneshot/struct.Sender.html" title="struct futures::unsync::oneshot::Sender">Sender</a>&lt;T&gt;</code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#71-136' title='goto source code'>[src]</a></span></h3>
<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>(self, val: T) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, T&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#82-89' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Completes this oneshot with a successful result.</p>
<p>This function will consume <code>self</code> and indicate to the other end, the
<code>Receiver</code>, that the error provided is the result of the computation this
represents.</p>
<p>If the value is successfully enqueued for the remote end to receive,
then <code>Ok(())</code> is returned. If the receiving end was deallocated before
this function was called, however, then <code>Err</code> is returned with the value
provided.</p>
</div><h4 id='method.poll_cancel' class="method"><span id='poll_cancel.v' class='invisible'><code>pub fn <a href='#method.poll_cancel' class='fnname'>poll_cancel</a>(&amp;mut self) -&gt; <a class="type" href="../../../futures/type.Poll.html" title="type futures::Poll">Poll</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#110-118' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Polls this <code>Sender</code> half to detect whether the <code>Receiver</code> this has
paired with has gone away.</p>
<p>This function can be used to learn about when the <code>Receiver</code> (consumer)
half has gone away and nothing will be able to receive a message sent
from <code>complete</code>.</p>
<p>Like <code>Future::poll</code>, this function will panic if it's not called from
within the context of a task. In other words, this should only ever be
called from inside another future.</p>
<p>If <code>Ready</code> is returned then it means that the <code>Receiver</code> has disappeared
and the result this <code>Sender</code> would otherwise produce should no longer
be produced.</p>
<p>If <code>NotReady</code> is returned then the <code>Receiver</code> is still alive and may be
able to receive a message if sent. The current task, however, is
scheduled to receive a notification if the corresponding <code>Receiver</code> goes
away.</p>
</div><h4 id='method.is_canceled' class="method"><span id='is_canceled.v' class='invisible'><code>pub fn <a href='#method.is_canceled' class='fnname'>is_canceled</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#133-135' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Tests to see whether this <code>Sender</code>'s corresponding <code>Receiver</code>
has gone away.</p>
<p>This function can be used to learn about when the <code>Receiver</code> (consumer)
half has gone away and nothing will be able to receive a message sent
from <code>send</code>.</p>
<p>Note that this function is intended to <em>not</em> be used in the context of a
future. If you're implementing a future you probably want to call the
<code>poll_cancel</code> function which will block the current task if the
cancellation hasn't happened yet. This can be useful when working on a
non-futures related thread, though, which would otherwise panic if
<code>poll_cancel</code> were called.</p>
</div></div>
            <h2 id='implementations' class='small-section-header'>
              Trait Implementations<a href='#implementations' class='anchor'></a>
            </h2>
        <h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>&gt; <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/unsync/oneshot/struct.Sender.html" title="struct futures::unsync::oneshot::Sender">Sender</a>&lt;T&gt;</code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#39' title='goto source code'>[src]</a></span></h3>
<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>(&amp;self, __arg_0: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <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/unsync/oneshot.rs.html#39' title='goto source code'>[src]</a></span></h4>
<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>
</div></div><h3 id='impl-Drop' class='impl'><span class='in-band'><code>impl&lt;T&gt; <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="../../../futures/unsync/oneshot/struct.Sender.html" title="struct futures::unsync::oneshot::Sender">Sender</a>&lt;T&gt;</code><a href='#impl-Drop' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#138-153' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.drop' class="method"><span id='drop.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop' class='fnname'>drop</a>(&amp;mut self)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#139-152' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Executes the destructor for this type. <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></p>
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