forked from pola-rs/polars
/
struct.Select.html
426 lines (373 loc) · 80.2 KB
/
struct.Select.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
<!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="Selects from a set of channel operations."><meta name="keywords" content="rust, rustlang, rust-lang, Select"><title>crossbeam_channel::Select - 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="../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../ayu.css" disabled ><script id="default-settings"></script><script src="../storage.js"></script><script src="../crates.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../favicon.svg">
<link rel="alternate icon" type="image/png" href="../favicon-16x16.png">
<link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../down-arrow.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" role="button">☰</div><a href='../crossbeam_channel/index.html'><div class='logo-container rust-logo'><img src='../rust-logo.png' alt='logo'></div></a><p class="location">Struct Select</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementations">Methods</a><div class="sidebar-links"><a href="#method.new">new</a><a href="#method.ready">ready</a><a href="#method.ready_deadline">ready_deadline</a><a href="#method.ready_timeout">ready_timeout</a><a href="#method.recv">recv</a><a href="#method.remove">remove</a><a href="#method.select">select</a><a href="#method.select_deadline">select_deadline</a><a href="#method.select_timeout">select_timeout</a><a href="#method.send">send</a><a href="#method.try_ready">try_ready</a><a href="#method.try_select">try_select</a></div><a class="sidebar-title" href="#trait-implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-Default">Default</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">!RefUnwindSafe</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">!UnwindSafe</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%3CT%3E">Borrow<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><p class="location"><a href="index.html">crossbeam_channel</a></p><div id="sidebar-vars" data-name="Select" data-ty="struct" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../brush.svg" width="18" height="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" class="help-button">?</button>
<a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Struct <a href="index.html">crossbeam_channel</a>::<wbr><a class="struct" href="">Select</a></span><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/crossbeam_channel/select.rs.html#586-592" title="goto source code">[src]</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust struct">pub struct Select<'a> { /* fields omitted */ }</pre></div><div class="docblock"><p>Selects from a set of channel operations.</p>
<p><code>Select</code> allows you to define a set of channel operations, wait until any one of them becomes
ready, and finally execute it. If multiple operations are ready at the same time, a random one
among them is selected.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready even
when it will simply return an error because the channel is disconnected.</p>
<p>The <a href="../crossbeam_channel/macro.select.html" title="select!"><code>select!</code></a> macro is a convenience wrapper around <code>Select</code>. However, it cannot select over a
dynamically created list of channel operations.</p>
<p>Once a list of operations has been built with <code>Select</code>, there are two different ways of
proceeding:</p>
<ul>
<li>
<p>Select an operation with <a href="../crossbeam_channel/struct.Select.html#method.try_select"><code>try_select</code></a>, <a href="../crossbeam_channel/struct.Select.html#method.select"><code>select</code></a>, or <a href="../crossbeam_channel/struct.Select.html#method.select_timeout"><code>select_timeout</code></a>. If successful,
the returned selected operation has already begun and <strong>must</strong> be completed. If we don’t
complete it, a panic will occur.</p>
</li>
<li>
<p>Wait for an operation to become ready with <a href="../crossbeam_channel/struct.Select.html#method.try_ready"><code>try_ready</code></a>, <a href="../crossbeam_channel/struct.Select.html#method.ready"><code>ready</code></a>, or <a href="../crossbeam_channel/struct.Select.html#method.ready_timeout"><code>ready_timeout</code></a>. If
successful, we may attempt to execute the operation, but are not obliged to. In fact, it’s
possible for another thread to make the operation not ready just before we try executing it,
so it’s wise to use a retry loop. However, note that these methods might return with success
spuriously, so it’s a good idea to always double check if the operation is really ready.</p>
</li>
</ul>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<p>Use <a href="../crossbeam_channel/struct.Select.html#method.select"><code>select</code></a> to receive a message from a list of receivers:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">Receiver</span>, <span class="ident">RecvError</span>, <span class="ident">Select</span>};
<span class="kw">fn</span> <span class="ident">recv_multiple</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>(<span class="ident">rs</span>: <span class="kw-2">&</span>[<span class="ident">Receiver</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>]) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">RecvError</span><span class="op">></span> {
<span class="comment">// Build a list of operations.</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">for</span> <span class="ident">r</span> <span class="kw">in</span> <span class="ident">rs</span> {
<span class="ident">sel</span>.<span class="ident">recv</span>(<span class="ident">r</span>);
}
<span class="comment">// Complete the selected operation.</span>
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">select</span>();
<span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="ident">oper</span>.<span class="ident">index</span>();
<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">rs</span>[<span class="ident">index</span>])
}</pre></div>
<p>Use <a href="../crossbeam_channel/struct.Select.html#method.ready"><code>ready</code></a> to receive a message from a list of receivers:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">Receiver</span>, <span class="ident">RecvError</span>, <span class="ident">Select</span>};
<span class="kw">fn</span> <span class="ident">recv_multiple</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>(<span class="ident">rs</span>: <span class="kw-2">&</span>[<span class="ident">Receiver</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>]) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">RecvError</span><span class="op">></span> {
<span class="comment">// Build a list of operations.</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">for</span> <span class="ident">r</span> <span class="kw">in</span> <span class="ident">rs</span> {
<span class="ident">sel</span>.<span class="ident">recv</span>(<span class="ident">r</span>);
}
<span class="kw">loop</span> {
<span class="comment">// Wait until a receive operation becomes ready and try executing it.</span>
<span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">ready</span>();
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">rs</span>[<span class="ident">index</span>].<span class="ident">try_recv</span>();
<span class="comment">// If the operation turns out not to be ready, retry.</span>
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=</span> <span class="ident">res</span> {
<span class="kw">if</span> <span class="ident">e</span>.<span class="ident">is_empty</span>() {
<span class="kw">continue</span>;
}
}
<span class="comment">// Success!</span>
<span class="kw">return</span> <span class="ident">res</span>.<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">RecvError</span>);
}
}</pre></div>
</div><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><h3 id="impl" class="impl"><code class="in-band">impl<'a> <a class="struct" href="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a href="#impl" class="anchor"></a><a class="srclink" href="../src/crossbeam_channel/select.rs.html#597-1091" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.new" class="method"><code>pub fn <a href="#method.new" class="fnname">new</a>() -> <a class="struct" href="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#610-615" title="goto source code">[src]</a></h4><div class="docblock"><p>Creates an empty list of channel operations for selection.</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">crossbeam_channel</span>::<span class="ident">Select</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="comment">// The list of operations is empty, which means no operation can be selected.</span>
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">sel</span>.<span class="ident">try_select</span>().<span class="ident">is_err</span>());</pre></div>
</div><h4 id="method.send" class="method"><code>pub fn <a href="#method.send" class="fnname">send</a><T>(&mut self, s: &'a <a class="struct" href="../crossbeam_channel/struct.Sender.html" title="struct crossbeam_channel::Sender">Sender</a><T>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#631-637" title="goto source code">[src]</a></h4><div class="docblock"><p>Adds a send operation.</p>
<p>Returns the index of the added operation.</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">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s</span>, <span class="ident">r</span>) <span class="op">=</span> <span class="ident">unbounded</span>::<span class="op"><</span><span class="ident">i32</span><span class="op">></span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">send</span>(<span class="kw-2">&</span><span class="ident">s</span>);</pre></div>
</div><h4 id="method.recv" class="method"><code>pub fn <a href="#method.recv" class="fnname">recv</a><T>(&mut self, r: &'a <a class="struct" href="../crossbeam_channel/struct.Receiver.html" title="struct crossbeam_channel::Receiver">Receiver</a><T>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#653-659" title="goto source code">[src]</a></h4><div class="docblock"><p>Adds a receive operation.</p>
<p>Returns the index of the added operation.</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">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s</span>, <span class="ident">r</span>) <span class="op">=</span> <span class="ident">unbounded</span>::<span class="op"><</span><span class="ident">i32</span><span class="op">></span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r</span>);</pre></div>
</div><h4 id="method.remove" class="method"><code>pub fn <a href="#method.remove" class="fnname">remove</a>(&mut self, index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#697-714" title="goto source code">[src]</a></h4><div class="docblock"><p>Removes a previously added operation.</p>
<p>This is useful when an operation is selected because the channel got disconnected and we
want to try again to select a different operation instead.</p>
<p>If new operations are added after removing some, the indices of removed operations will not
be reused.</p>
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
<p>An attempt to remove a non-existing or already removed operation will panic.</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="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>::<span class="op"><</span><span class="ident">i32</span><span class="op">></span>();
<span class="kw">let</span> (<span class="kw">_</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>::<span class="op"><</span><span class="ident">i32</span><span class="op">></span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// Both operations are initially ready, so a random one will be executed.</span>
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">select</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">index</span>(), <span class="ident">oper2</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>).<span class="ident">is_err</span>());
<span class="ident">sel</span>.<span class="ident">remove</span>(<span class="ident">oper2</span>);
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">select</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">index</span>(), <span class="ident">oper1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>), <span class="prelude-val">Ok</span>(<span class="number">10</span>));</pre></div>
</div><h4 id="method.try_select" class="method"><code>pub fn <a href="#method.try_select" class="fnname">try_select</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="struct" href="../crossbeam_channel/struct.SelectedOperation.html" title="struct crossbeam_channel::SelectedOperation">SelectedOperation</a><'a>, <a class="struct" href="../crossbeam_channel/struct.TrySelectError.html" title="struct crossbeam_channel::TrySelectError">TrySelectError</a>></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#754-756" title="goto source code">[src]</a></h4><div class="docblock"><p>Attempts to select one of the operations without blocking.</p>
<p>If an operation is ready, it is selected and returned. If multiple operations are ready at
the same time, a random one among them is selected. If none of the operations are ready, an
error is returned.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>The selected operation must be completed with <a href="../crossbeam_channel/struct.SelectedOperation.html#method.send" title="SelectedOperation::send"><code>SelectedOperation::send</code></a>
or <a href="../crossbeam_channel/struct.SelectedOperation.html#method.recv" title="SelectedOperation::recv"><code>SelectedOperation::recv</code></a>.</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">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
<span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// Both operations are initially ready, so a random one will be executed.</span>
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">try_select</span>();
<span class="kw">match</span> <span class="ident">oper</span> {
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"both operations should be ready"</span>),
<span class="prelude-val">Ok</span>(<span class="ident">oper</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="ident">oper</span>.<span class="ident">index</span>() {
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}
}</pre></div>
</div><h4 id="method.select" class="method"><code>pub fn <a href="#method.select" class="fnname">select</a>(&mut self) -> <a class="struct" href="../crossbeam_channel/struct.SelectedOperation.html" title="struct crossbeam_channel::SelectedOperation">SelectedOperation</a><'a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#801-803" title="goto source code">[src]</a></h4><div class="docblock"><p>Blocks until one of the operations becomes ready and selects it.</p>
<p>Once an operation becomes ready, it is selected and returned. If multiple operations are
ready at the same time, a random one among them is selected.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>The selected operation must be completed with <a href="../crossbeam_channel/struct.SelectedOperation.html#method.send" title="SelectedOperation::send"><code>SelectedOperation::send</code></a>
or <a href="../crossbeam_channel/struct.SelectedOperation.html#method.recv" title="SelectedOperation::recv"><code>SelectedOperation::recv</code></a>.</p>
<h1 id="panics-1" class="section-header"><a href="#panics-1">Panics</a></h1>
<p>Panics if no operations have been added to <code>Select</code>.</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">thread</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>));
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
});
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// The second operation will be selected because it becomes ready first.</span>
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">select</span>();
<span class="kw">match</span> <span class="ident">oper</span>.<span class="ident">index</span>() {
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}</pre></div>
</div><h4 id="method.select_timeout" class="method"><code>pub fn <a href="#method.select_timeout" class="fnname">select_timeout</a>(<br> &mut self, <br> timeout: <a class="struct" href="https://doc.rust-lang.org/nightly/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a><br>) -> <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="../crossbeam_channel/struct.SelectedOperation.html" title="struct crossbeam_channel::SelectedOperation">SelectedOperation</a><'a>, <a class="struct" href="../crossbeam_channel/struct.SelectTimeoutError.html" title="struct crossbeam_channel::SelectTimeoutError">SelectTimeoutError</a>></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#848-853" title="goto source code">[src]</a></h4><div class="docblock"><p>Blocks for a limited time until one of the operations becomes ready and selects it.</p>
<p>If an operation becomes ready, it is selected and returned. If multiple operations are
ready at the same time, a random one among them is selected. If none of the operations
become ready for the specified duration, an error is returned.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>The selected operation must be completed with <a href="../crossbeam_channel/struct.SelectedOperation.html#method.send" title="SelectedOperation::send"><code>SelectedOperation::send</code></a>
or <a href="../crossbeam_channel/struct.SelectedOperation.html#method.recv" title="SelectedOperation::recv"><code>SelectedOperation::recv</code></a>.</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">thread</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>));
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
});
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// The second operation will be selected because it becomes ready first.</span>
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">select_timeout</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">500</span>));
<span class="kw">match</span> <span class="ident">oper</span> {
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"should not have timed out"</span>),
<span class="prelude-val">Ok</span>(<span class="ident">oper</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="ident">oper</span>.<span class="ident">index</span>() {
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}
}</pre></div>
</div><h4 id="method.select_deadline" class="method"><code>pub fn <a href="#method.select_deadline" class="fnname">select_deadline</a>(<br> &mut self, <br> deadline: <a class="struct" href="https://doc.rust-lang.org/nightly/std/time/struct.Instant.html" title="struct std::time::Instant">Instant</a><br>) -> <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="../crossbeam_channel/struct.SelectedOperation.html" title="struct crossbeam_channel::SelectedOperation">SelectedOperation</a><'a>, <a class="struct" href="../crossbeam_channel/struct.SelectTimeoutError.html" title="struct crossbeam_channel::SelectTimeoutError">SelectTimeoutError</a>></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#900-905" title="goto source code">[src]</a></h4><div class="docblock"><p>Blocks until a given deadline, or until one of the operations becomes ready and selects it.</p>
<p>If an operation becomes ready, it is selected and returned. If multiple operations are
ready at the same time, a random one among them is selected. If none of the operations
become ready before the given deadline, an error is returned.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>The selected operation must be completed with <a href="../crossbeam_channel/struct.SelectedOperation.html#method.send" title="SelectedOperation::send"><code>SelectedOperation::send</code></a>
or <a href="../crossbeam_channel/struct.SelectedOperation.html#method.recv" title="SelectedOperation::recv"><code>SelectedOperation::recv</code></a>.</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">thread</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::{<span class="ident">Instant</span>, <span class="ident">Duration</span>};
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>));
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
});
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="kw">let</span> <span class="ident">deadline</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>() <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">500</span>);
<span class="comment">// The second operation will be selected because it becomes ready first.</span>
<span class="kw">let</span> <span class="ident">oper</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">select_deadline</span>(<span class="ident">deadline</span>);
<span class="kw">match</span> <span class="ident">oper</span> {
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"should not have timed out"</span>),
<span class="prelude-val">Ok</span>(<span class="ident">oper</span>) <span class="op">=</span><span class="op">></span> <span class="kw">match</span> <span class="ident">oper</span>.<span class="ident">index</span>() {
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">oper</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}
}</pre></div>
</div><h4 id="method.try_ready" class="method"><code>pub fn <a href="#method.try_ready" class="fnname">try_ready</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.usize.html">usize</a>, <a class="struct" href="../crossbeam_channel/struct.TryReadyError.html" title="struct crossbeam_channel::TryReadyError">TryReadyError</a>></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#942-947" title="goto source code">[src]</a></h4><div class="docblock"><p>Attempts to find a ready operation without blocking.</p>
<p>If an operation is ready, its index is returned. If multiple operations are ready at the
same time, a random one among them is chosen. If none of the operations are ready, an error
is returned.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>Note that this method might return with success spuriously, so it’s a good idea to always
double check if the operation is really ready.</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">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
<span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// Both operations are initially ready, so a random one will be chosen.</span>
<span class="kw">match</span> <span class="ident">sel</span>.<span class="ident">try_ready</span>() {
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"both operations should be ready"</span>),
<span class="prelude-val">Ok</span>(<span class="ident">i</span>) <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r1</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">i</span>) <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r2</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}</pre></div>
</div><h4 id="method.ready" class="method"><code>pub fn <a href="#method.ready" class="fnname">ready</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#991-997" title="goto source code">[src]</a></h4><div class="docblock"><p>Blocks until one of the operations becomes ready.</p>
<p>Once an operation becomes ready, its index is returned. If multiple operations are ready at
the same time, a random one among them is chosen.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>Note that this method might return with success spuriously, so it’s a good idea to always
double check if the operation is really ready.</p>
<h1 id="panics-2" class="section-header"><a href="#panics-2">Panics</a></h1>
<p>Panics if no operations have been added to <code>Select</code>.</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">thread</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>));
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
});
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// The second operation will be selected because it becomes ready first.</span>
<span class="kw">match</span> <span class="ident">sel</span>.<span class="ident">ready</span>() {
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r1</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="ident">i</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r2</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}</pre></div>
</div><h4 id="method.ready_timeout" class="method"><code>pub fn <a href="#method.ready_timeout" class="fnname">ready_timeout</a>(<br> &mut self, <br> timeout: <a class="struct" href="https://doc.rust-lang.org/nightly/core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a><br>) -> <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.usize.html">usize</a>, <a class="struct" href="../crossbeam_channel/struct.ReadyTimeoutError.html" title="struct crossbeam_channel::ReadyTimeoutError">ReadyTimeoutError</a>></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1039-1041" title="goto source code">[src]</a></h4><div class="docblock"><p>Blocks for a limited time until one of the operations becomes ready.</p>
<p>If an operation becomes ready, its index is returned. If multiple operations are ready at
the same time, a random one among them is chosen. If none of the operations become ready
for the specified duration, an error is returned.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>Note that this method might return with success spuriously, so it’s a good idea to double
check if the operation is really ready.</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">thread</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>));
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
});
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// The second operation will be selected because it becomes ready first.</span>
<span class="kw">match</span> <span class="ident">sel</span>.<span class="ident">ready_timeout</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">500</span>)) {
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"should not have timed out"</span>),
<span class="prelude-val">Ok</span>(<span class="ident">i</span>) <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r1</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">i</span>) <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r2</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}</pre></div>
</div><h4 id="method.ready_deadline" class="method"><code>pub fn <a href="#method.ready_deadline" class="fnname">ready_deadline</a>(<br> &mut self, <br> deadline: <a class="struct" href="https://doc.rust-lang.org/nightly/std/time/struct.Instant.html" title="struct std::time::Instant">Instant</a><br>) -> <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.usize.html">usize</a>, <a class="struct" href="../crossbeam_channel/struct.ReadyTimeoutError.html" title="struct crossbeam_channel::ReadyTimeoutError">ReadyTimeoutError</a>></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1085-1090" title="goto source code">[src]</a></h4><div class="docblock"><p>Blocks until a given deadline, or until one of the operations becomes ready.</p>
<p>If an operation becomes ready, its index is returned. If multiple operations are ready at
the same time, a random one among them is chosen. If none of the operations become ready
before the deadline, an error is returned.</p>
<p>An operation is considered to be ready if it doesn’t have to block. Note that it is ready
even when it will simply return an error because the channel is disconnected.</p>
<p>Note that this method might return with success spuriously, so it’s a good idea to double
check if the operation is really ready.</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">thread</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::{<span class="ident">Duration</span>, <span class="ident">Instant</span>};
<span class="kw">use</span> <span class="ident">crossbeam_channel</span>::{<span class="ident">unbounded</span>, <span class="ident">Select</span>};
<span class="kw">let</span> <span class="ident">deadline</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>() <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">500</span>);
<span class="kw">let</span> (<span class="ident">s1</span>, <span class="ident">r1</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="kw">let</span> (<span class="ident">s2</span>, <span class="ident">r2</span>) <span class="op">=</span> <span class="ident">unbounded</span>();
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> {
<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>));
<span class="ident">s1</span>.<span class="ident">send</span>(<span class="number">10</span>).<span class="ident">unwrap</span>();
});
<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">s2</span>.<span class="ident">send</span>(<span class="number">20</span>).<span class="ident">unwrap</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sel</span> <span class="op">=</span> <span class="ident">Select</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">oper1</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r1</span>);
<span class="kw">let</span> <span class="ident">oper2</span> <span class="op">=</span> <span class="ident">sel</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="ident">r2</span>);
<span class="comment">// The second operation will be selected because it becomes ready first.</span>
<span class="kw">match</span> <span class="ident">sel</span>.<span class="ident">ready_deadline</span>(<span class="ident">deadline</span>) {
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"should not have timed out"</span>),
<span class="prelude-val">Ok</span>(<span class="ident">i</span>) <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper1</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r1</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">10</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">i</span>) <span class="kw">if</span> <span class="ident">i</span> <span class="op">=</span><span class="op">=</span> <span class="ident">oper2</span> <span class="op">=</span><span class="op">></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">r2</span>.<span class="ident">try_recv</span>(), <span class="prelude-val">Ok</span>(<span class="number">20</span>)),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}</pre></div>
</div></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><h3 id="impl-Clone" class="impl"><code class="in-band">impl<'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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a href="#impl-Clone" class="anchor"></a><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1093-1100" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.clone" class="method hidden"><code>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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1094-1099" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id="method.clone_from" class="method hidden"><code>pub 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: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/clone.rs.html#130" title="goto source code">[src]</a></h4><div class='docblock hidden'><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-Debug" class="impl"><code class="in-band">impl <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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'_></code><a href="#impl-Debug" class="anchor"></a><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1108-1112" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.fmt" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &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><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1109-1111" title="goto source code">[src]</a></h4><div class='docblock hidden'><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-Default" class="impl"><code class="in-band">impl<'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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a href="#impl-Default" class="anchor"></a><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1102-1106" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.default" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default" class="fnname">default</a>() -> <a class="struct" href="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a class="srclink" href="../src/crossbeam_channel/select.rs.html#1103-1105" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default">Read more</a></p>
</div></div><h3 id="impl-Send" class="impl"><code class="in-band">impl <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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'_></code><a href="#impl-Send" class="anchor"></a><a class="srclink" href="../src/crossbeam_channel/select.rs.html#594" title="goto source code">[src]</a></h3><div class="impl-items"></div><h3 id="impl-Sync" class="impl"><code class="in-band">impl <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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'_></code><a href="#impl-Sync" class="anchor"></a><a class="srclink" href="../src/crossbeam_channel/select.rs.html#595" title="goto source code">[src]</a></h3><div class="impl-items"></div></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><h3 id="impl-RefUnwindSafe" class="impl"><code class="in-band">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a href="#impl-RefUnwindSafe" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Unpin" class="impl"><code class="in-band">impl<'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="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a href="#impl-Unpin" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-UnwindSafe" class="impl"><code class="in-band">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../crossbeam_channel/struct.Select.html" title="struct crossbeam_channel::Select">Select</a><'a></code><a href="#impl-UnwindSafe" class="anchor"></a></h3><div class="impl-items"></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-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#131-135" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.type_id" class="method hidden"><code>pub 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#132" 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><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/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> 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%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#208-213" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#210" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id="impl-BorrowMut%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> 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%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#216-220" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow_mut" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#217" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></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 T</code><a href="#impl-From%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#544-548" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.from" class="method hidden"><code>pub 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/mod.rs.html#545" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id="impl-Into%3CU%3E" 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><U> 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%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#533-540" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.into" class="method hidden"><code>pub 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/mod.rs.html#537" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id="impl-ToOwned" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/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="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#81-93" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Owned" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="type">Owned</a> = T</code></h4><div class='docblock'><p>The resulting type after obtaining ownership.</p>
</div><h4 id="method.to_owned" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fnname">to_owned</a>(&self) -> T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#86" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div><h4 id="method.clone_into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fnname">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#90" title="goto source code">[src]</a></h4><div class="item-info hidden"><div class="stab unstable"><details><summary><span class="emoji">🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</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="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></div><h3 id="impl-TryFrom%3CU%3E" 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><U> 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%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#581-590" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error" class="type"><code>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>pub 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/mod.rs.html#587" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id="impl-TryInto%3CU%3E" 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><U> 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%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#567-576" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error-1" class="type"><code>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>pub 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/mod.rs.html#573" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div></div></section><section id="search" class="content hidden"></section><section class="footer"></section><div id="rustdoc-vars" data-root-path="../" data-current-crate="crossbeam_channel" data-search-js="../search-index.js"></div>
<script src="../main.js"></script></body></html>