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
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="rustdoc">
<meta name="description" content="API documentation for the Rust `Result` struct in crate `irsc`.">
<meta name="keywords" content="rust, rustlang, rust-lang, Result">
<title>irsc::Result - Rust</title>
<link rel="stylesheet" type="text/css" href="../main.css">
</head>
<body class="rustdoc">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<section class="sidebar">
<p class='location'><a href='index.html'>irsc</a></p><script>window.sidebarCurrent = {name: 'Result', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
</section>
<nav class="sub">
<form class="search-form js-only">
<div class="search-container">
<input class="search-input" name="search"
autocomplete="off"
placeholder="Click or press 'S' to search, '?' for more options..."
type="search">
</div>
</form>
</nav>
<section id='main' class="content struct">
<h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>irsc</a>::<wbr><a class='struct' href=''>Result</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 id='src-34138' class='srclink' href='../src/irsc/lib.rs.html#49' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct Result<T>(_);</pre><h2 id='deref-methods'>Methods from <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.Deref.html' title='core::ops::Deref'>Deref</a><Target=<a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, <a class='enum' href='../irsc/enum.IrscError.html' title='irsc::IrscError'>IrscError</a>>></h2><div class='impl-items'><h4 id='method.is_ok' class='method'><code>fn <a href='#method.is_ok' class='fnname'>is_ok</a>(&self) -> <a href='http://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a></code></h4>
<div class='docblock'><p>Returns true if the result is <code>Ok</code></p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='op'>-</span><span class='number'>3</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>is_ok</span>(), <span class='boolval'>true</span>);
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"Some error message"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>is_ok</span>(), <span class='boolval'>false</span>);
</pre>
</div><h4 id='method.is_err' class='method'><code>fn <a href='#method.is_err' class='fnname'>is_err</a>(&self) -> <a href='http://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a></code></h4>
<div class='docblock'><p>Returns true if the result is <code>Err</code></p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='op'>-</span><span class='number'>3</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>is_err</span>(), <span class='boolval'>false</span>);
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"Some error message"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>is_err</span>(), <span class='boolval'>true</span>);
</pre>
</div><h4 id='method.ok' class='method'><code>fn <a href='#method.ok' class='fnname'>ok</a>(self) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/option/enum.Option.html' title='core::option::Option'>Option</a><T></code></h4>
<div class='docblock'><p>Converts from <code>Result<T, E></code> to <code>Option<T></code></p>
<p>Converts <code>self</code> into an <code>Option<T></code>, consuming <code>self</code>,
and discarding the error, if any.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>ok</span>(), <span class='prelude-val'>Some</span>(<span class='number'>2</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"Nothing here"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>ok</span>(), <span class='prelude-val'>None</span>);
</pre>
</div><h4 id='method.err' class='method'><code>fn <a href='#method.err' class='fnname'>err</a>(self) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/option/enum.Option.html' title='core::option::Option'>Option</a><E></code></h4>
<div class='docblock'><p>Converts from <code>Result<T, E></code> to <code>Option<E></code></p>
<p>Converts <code>self</code> into an <code>Option<E></code>, consuming <code>self</code>,
and discarding the success value, if any.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>err</span>(), <span class='prelude-val'>None</span>);
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"Nothing here"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>err</span>(), <span class='prelude-val'>Some</span>(<span class='string'>"Nothing here"</span>));
</pre>
</div><h4 id='method.as_ref' class='method'><code>fn <a href='#method.as_ref' class='fnname'>as_ref</a>(&self) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><&T, &E></code></h4>
<div class='docblock'><p>Converts from <code>Result<T, E></code> to <code>Result<&T, &E></code></p>
<p>Produces a new <code>Result</code>, containing a reference
into the original, leaving the original in place.</p>
<pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>as_ref</span>(), <span class='prelude-val'>Ok</span>(<span class='kw-2'>&</span><span class='number'>2</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"Error"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>as_ref</span>(), <span class='prelude-val'>Err</span>(<span class='kw-2'>&</span><span class='string'>"Error"</span>));
</pre>
</div><h4 id='method.as_mut' class='method'><code>fn <a href='#method.as_mut' class='fnname'>as_mut</a>(&mut self) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><&mut T, &mut E></code></h4>
<div class='docblock'><p>Converts from <code>Result<T, E></code> to <code>Result<&mut T, &mut E></code></p>
<pre class='rust rust-example-rendered'>
<span class='kw'>fn</span> <span class='ident'>mutate</span>(<span class='ident'>r</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='ident'>i32</span><span class='op'>></span>) {
<span class='kw'>match</span> <span class='ident'>r</span>.<span class='ident'>as_mut</span>() {
<span class='prelude-val'>Ok</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>v</span>) <span class='op'>=></span> <span class='op'>*</span><span class='ident'>v</span> <span class='op'>=</span> <span class='number'>42</span>,
<span class='prelude-val'>Err</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>e</span>) <span class='op'>=></span> <span class='op'>*</span><span class='ident'>e</span> <span class='op'>=</span> <span class='number'>0</span>,
}
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='ident'>i32</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='ident'>mutate</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>x</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>unwrap</span>(), <span class='number'>42</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='ident'>i32</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='number'>13</span>);
<span class='ident'>mutate</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>x</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>unwrap_err</span>(), <span class='number'>0</span>);
</pre>
</div><h4 id='method.as_slice' class='method'><code>fn <a href='#method.as_slice' class='fnname'>as_slice</a>(&self) -> <a href='http://doc.rust-lang.org/nightly/std/primitive.slice.html'>&[T]</a></code></h4>
<div class='stability'><em class='stab unstable'>Unstable</em></div><div class='docblock'><p>Converts from <code>Result<T, E></code> to <code>&[T]</code> (without copying)</p>
</div><h4 id='method.as_mut_slice' class='method'><code>fn <a href='#method.as_mut_slice' class='fnname'>as_mut_slice</a>(&mut self) -> <a href='http://doc.rust-lang.org/nightly/std/primitive.slice.html'>&mut [T]</a></code></h4>
<div class='stability'><em class='stab unstable'>Unstable<p>: waiting for mut conventions</p>
</em></div><div class='docblock'><p>Converts from <code>Result<T, E></code> to <code>&mut [T]</code> (without copying)</p>
<pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>u32</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='string'>"Gold"</span>);
{
<span class='kw'>let</span> <span class='ident'>v</span> <span class='op'>=</span> <span class='ident'>x</span>.<span class='ident'>as_mut_slice</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>v</span> <span class='op'>==</span> [<span class='string'>"Gold"</span>]);
<span class='ident'>v</span>[<span class='number'>0</span>] <span class='op'>=</span> <span class='string'>"Silver"</span>;
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>v</span> <span class='op'>==</span> [<span class='string'>"Silver"</span>]);
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>, <span class='prelude-val'>Ok</span>(<span class='string'>"Silver"</span>));
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>u32</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='number'>45</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>as_mut_slice</span>().<span class='ident'>is_empty</span>());
</pre>
</div><h4 id='method.map' class='method'><code>fn <a href='#method.map' class='fnname'>map</a><U, F>(self, op: F) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><U, E> <span class='where'>where F: <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.FnOnce.html' title='core::ops::FnOnce'>FnOnce</a>(T) -> U</span></code></h4>
<div class='docblock'><p>Maps a <code>Result<T, E></code> to <code>Result<U, E></code> by applying a function to an
contained <code>Ok</code> value, leaving an <code>Err</code> value untouched.</p>
<p>This function can be used to compose the results of two functions.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1>
<p>Print the numbers on each line of a string multiplied by two.</p>
<pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>line</span> <span class='op'>=</span> <span class='string'>"1\n2\n3\n4\n"</span>;
<span class='kw'>for</span> <span class='ident'>num</span> <span class='kw'>in</span> <span class='ident'>line</span>.<span class='ident'>lines</span>() {
<span class='kw'>match</span> <span class='ident'>num</span>.<span class='ident'>parse</span>::<span class='op'><</span><span class='ident'>i32</span><span class='op'>></span>().<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>i</span><span class='op'>|</span> <span class='ident'>i</span> <span class='op'>*</span> <span class='number'>2</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='macro'>println</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>n</span>),
<span class='prelude-val'>Err</span>(..) <span class='op'>=></span> {}
}
}
</pre>
</div><h4 id='method.map_err' class='method'><code>fn <a href='#method.map_err' class='fnname'>map_err</a><F, O>(self, op: O) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, F> <span class='where'>where O: <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.FnOnce.html' title='core::ops::FnOnce'>FnOnce</a>(E) -> F</span></code></h4>
<div class='docblock'><p>Maps a <code>Result<T, E></code> to <code>Result<T, F></code> by applying a function to an
contained <code>Err</code> value, leaving an <code>Ok</code> value untouched.</p>
<p>This function can be used to pass through a successful result while handling
an error.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>fn</span> <span class='ident'>stringify</span>(<span class='ident'>x</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='ident'>String</span> { <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"error code: {}"</span>, <span class='ident'>x</span>) }
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='ident'>u32</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>map_err</span>(<span class='ident'>stringify</span>), <span class='prelude-val'>Ok</span>(<span class='number'>2</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='ident'>u32</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='number'>13</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>map_err</span>(<span class='ident'>stringify</span>), <span class='prelude-val'>Err</span>(<span class='string'>"error code: 13"</span>.<span class='ident'>to_string</span>()));
</pre>
</div><h4 id='method.iter' class='method'><code>fn <a href='#method.iter' class='fnname'>iter</a>(&self) -> <a class='struct' href='http://doc.rust-lang.org/nightly/core/result/struct.Iter.html' title='core::result::Iter'>Iter</a><T></code></h4>
<div class='docblock'><p>Returns an iterator over the possibly contained value.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>7</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>iter</span>().<span class='ident'>next</span>(), <span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='number'>7</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"nothing!"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>iter</span>().<span class='ident'>next</span>(), <span class='prelude-val'>None</span>);
</pre>
</div><h4 id='method.iter_mut' class='method'><code>fn <a href='#method.iter_mut' class='fnname'>iter_mut</a>(&mut self) -> <a class='struct' href='http://doc.rust-lang.org/nightly/core/result/struct.IterMut.html' title='core::result::IterMut'>IterMut</a><T></code></h4>
<div class='docblock'><p>Returns a mutable iterator over the possibly contained value.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>7</span>);
<span class='kw'>match</span> <span class='ident'>x</span>.<span class='ident'>iter_mut</span>().<span class='ident'>next</span>() {
<span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>) <span class='op'>=></span> <span class='op'>*</span><span class='ident'>x</span> <span class='op'>=</span> <span class='number'>40</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> {},
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>, <span class='prelude-val'>Ok</span>(<span class='number'>40</span>));
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"nothing!"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>iter_mut</span>().<span class='ident'>next</span>(), <span class='prelude-val'>None</span>);
</pre>
</div><h4 id='method.and' class='method'><code>fn <a href='#method.and' class='fnname'>and</a><U>(self, res: <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><U, E>) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><U, E></code></h4>
<div class='docblock'><p>Returns <code>res</code> if the result is <code>Ok</code>, otherwise returns the <code>Err</code> value of <code>self</code>.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"late error"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>and</span>(<span class='ident'>y</span>), <span class='prelude-val'>Err</span>(<span class='string'>"late error"</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"early error"</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='string'>"foo"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>and</span>(<span class='ident'>y</span>), <span class='prelude-val'>Err</span>(<span class='string'>"early error"</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"not a 2"</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"late error"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>and</span>(<span class='ident'>y</span>), <span class='prelude-val'>Err</span>(<span class='string'>"not a 2"</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='string'>"different result type"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>and</span>(<span class='ident'>y</span>), <span class='prelude-val'>Ok</span>(<span class='string'>"different result type"</span>));
</pre>
</div><h4 id='method.and_then' class='method'><code>fn <a href='#method.and_then' class='fnname'>and_then</a><U, F>(self, op: F) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><U, E> <span class='where'>where F: <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.FnOnce.html' title='core::ops::FnOnce'>FnOnce</a>(T) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><U, E></span></code></h4>
<div class='docblock'><p>Calls <code>op</code> if the result is <code>Ok</code>, otherwise returns the <code>Err</code> value of <code>self</code>.</p>
<p>This function can be used for control flow based on result values.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>fn</span> <span class='ident'>sq</span>(<span class='ident'>x</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='ident'>u32</span><span class='op'>></span> { <span class='prelude-val'>Ok</span>(<span class='ident'>x</span> <span class='op'>*</span> <span class='ident'>x</span>) }
<span class='kw'>fn</span> <span class='ident'>err</span>(<span class='ident'>x</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='ident'>u32</span><span class='op'>></span> { <span class='prelude-val'>Err</span>(<span class='ident'>x</span>) }
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Ok</span>(<span class='number'>2</span>).<span class='ident'>and_then</span>(<span class='ident'>sq</span>).<span class='ident'>and_then</span>(<span class='ident'>sq</span>), <span class='prelude-val'>Ok</span>(<span class='number'>16</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Ok</span>(<span class='number'>2</span>).<span class='ident'>and_then</span>(<span class='ident'>sq</span>).<span class='ident'>and_then</span>(<span class='ident'>err</span>), <span class='prelude-val'>Err</span>(<span class='number'>4</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Ok</span>(<span class='number'>2</span>).<span class='ident'>and_then</span>(<span class='ident'>err</span>).<span class='ident'>and_then</span>(<span class='ident'>sq</span>), <span class='prelude-val'>Err</span>(<span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Err</span>(<span class='number'>3</span>).<span class='ident'>and_then</span>(<span class='ident'>sq</span>).<span class='ident'>and_then</span>(<span class='ident'>sq</span>), <span class='prelude-val'>Err</span>(<span class='number'>3</span>));
</pre>
</div><h4 id='method.or' class='method'><code>fn <a href='#method.or' class='fnname'>or</a><F>(self, res: <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, F>) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, F></code></h4>
<div class='docblock'><p>Returns <code>res</code> if the result is <code>Err</code>, otherwise returns the <code>Ok</code> value of <code>self</code>.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"late error"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>or</span>(<span class='ident'>y</span>), <span class='prelude-val'>Ok</span>(<span class='number'>2</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"early error"</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>or</span>(<span class='ident'>y</span>), <span class='prelude-val'>Ok</span>(<span class='number'>2</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"not a 2"</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"late error"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>or</span>(<span class='ident'>y</span>), <span class='prelude-val'>Err</span>(<span class='string'>"late error"</span>));
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='kw'>let</span> <span class='ident'>y</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>100</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>or</span>(<span class='ident'>y</span>), <span class='prelude-val'>Ok</span>(<span class='number'>2</span>));
</pre>
</div><h4 id='method.or_else' class='method'><code>fn <a href='#method.or_else' class='fnname'>or_else</a><F, O>(self, op: O) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, F> <span class='where'>where O: <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.FnOnce.html' title='core::ops::FnOnce'>FnOnce</a>(E) -> <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, F></span></code></h4>
<div class='docblock'><p>Calls <code>op</code> if the result is <code>Err</code>, otherwise returns the <code>Ok</code> value of <code>self</code>.</p>
<p>This function can be used for control flow based on result values.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>fn</span> <span class='ident'>sq</span>(<span class='ident'>x</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='ident'>u32</span><span class='op'>></span> { <span class='prelude-val'>Ok</span>(<span class='ident'>x</span> <span class='op'>*</span> <span class='ident'>x</span>) }
<span class='kw'>fn</span> <span class='ident'>err</span>(<span class='ident'>x</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='ident'>u32</span><span class='op'>></span> { <span class='prelude-val'>Err</span>(<span class='ident'>x</span>) }
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Ok</span>(<span class='number'>2</span>).<span class='ident'>or_else</span>(<span class='ident'>sq</span>).<span class='ident'>or_else</span>(<span class='ident'>sq</span>), <span class='prelude-val'>Ok</span>(<span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Ok</span>(<span class='number'>2</span>).<span class='ident'>or_else</span>(<span class='ident'>err</span>).<span class='ident'>or_else</span>(<span class='ident'>sq</span>), <span class='prelude-val'>Ok</span>(<span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Err</span>(<span class='number'>3</span>).<span class='ident'>or_else</span>(<span class='ident'>sq</span>).<span class='ident'>or_else</span>(<span class='ident'>err</span>), <span class='prelude-val'>Ok</span>(<span class='number'>9</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Err</span>(<span class='number'>3</span>).<span class='ident'>or_else</span>(<span class='ident'>err</span>).<span class='ident'>or_else</span>(<span class='ident'>err</span>), <span class='prelude-val'>Err</span>(<span class='number'>3</span>));
</pre>
</div><h4 id='method.unwrap_or' class='method'><code>fn <a href='#method.unwrap_or' class='fnname'>unwrap_or</a>(self, optb: T) -> T</code></h4>
<div class='docblock'><p>Unwraps a result, yielding the content of an <code>Ok</code>.
Else it returns <code>optb</code>.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>optb</span> <span class='op'>=</span> <span class='number'>2</span>;
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>9</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>unwrap_or</span>(<span class='ident'>optb</span>), <span class='number'>9</span>);
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"error"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>unwrap_or</span>(<span class='ident'>optb</span>), <span class='ident'>optb</span>);
</pre>
</div><h4 id='method.unwrap_or_else' class='method'><code>fn <a href='#method.unwrap_or_else' class='fnname'>unwrap_or_else</a><F>(self, op: F) -> T <span class='where'>where F: <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.FnOnce.html' title='core::ops::FnOnce'>FnOnce</a>(E) -> T</span></code></h4>
<div class='docblock'><p>Unwraps a result, yielding the content of an <code>Ok</code>.
If the value is an <code>Err</code> then it calls <code>op</code> with its value.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>fn</span> <span class='ident'>count</span>(<span class='ident'>x</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='ident'>x</span>.<span class='ident'>len</span>() }
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Ok</span>(<span class='number'>2</span>).<span class='ident'>unwrap_or_else</span>(<span class='ident'>count</span>), <span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Err</span>(<span class='string'>"foo"</span>).<span class='ident'>unwrap_or_else</span>(<span class='ident'>count</span>), <span class='number'>3</span>);
</pre>
</div></div><div class='impl-items'><h4 id='method.unwrap' class='method'><code>fn <a href='#method.unwrap' class='fnname'>unwrap</a>(self) -> T</code></h4>
<div class='docblock'><p>Unwraps a result, yielding the content of an <code>Ok</code>.</p>
<h1 id="panics" class='section-header'><a
href="#panics">Panics</a></h1>
<p>Panics if the value is an <code>Err</code>, with a panic message provided by the
<code>Err</code>'s value.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>unwrap</span>(), <span class='number'>2</span>);
</pre>
<pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"emergency failure"</span>);
<span class='ident'>x</span>.<span class='ident'>unwrap</span>(); <span class='comment'>// panics with `emergency failure`</span>
</pre>
</div><h4 id='method.expect' class='method'><code>fn <a href='#method.expect' class='fnname'>expect</a>(self, msg: &<a href='http://doc.rust-lang.org/nightly/std/primitive.str.html'>str</a>) -> T</code></h4>
<div class='stability'><em class='stab unstable'>Unstable<p>: newly introduced</p>
</em></div><div class='docblock'><p>Unwraps a result, yielding the content of an <code>Ok</code>.</p>
<p>Panics if the value is an <code>Err</code>, with a panic message including the
passed message, and the content of the <code>Err</code>.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='attribute'>#<span class='op'>!</span>[<span class='ident'>feature</span>(<span class='ident'>result_expect</span>)]</span>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"emergency failure"</span>);
<span class='ident'>x</span>.<span class='ident'>expect</span>(<span class='string'>"Testing expect"</span>); <span class='comment'>// panics with `Testing expect: emergency failure`</span>
</pre>
</div></div><div class='impl-items'><h4 id='method.unwrap_err' class='method'><code>fn <a href='#method.unwrap_err' class='fnname'>unwrap_err</a>(self) -> E</code></h4>
<div class='docblock'><p>Unwraps a result, yielding the content of an <code>Err</code>.</p>
<h1 id="panics" class='section-header'><a
href="#panics">Panics</a></h1>
<p>Panics if the value is an <code>Ok</code>, with a custom panic message provided
by the <code>Ok</code>'s value.</p>
<h1 id="examples" class='section-header'><a
href="#examples">Examples</a></h1><pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>2</span>);
<span class='ident'>x</span>.<span class='ident'>unwrap_err</span>(); <span class='comment'>// panics with `2`</span>
</pre>
<pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>x</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u32</span>, <span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Err</span>(<span class='string'>"emergency failure"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>x</span>.<span class='ident'>unwrap_err</span>(), <span class='string'>"emergency failure"</span>);
</pre>
</div></div><h2 id='implementations'>Trait Implementations</h2><h3 class='impl'><code>impl<T> <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.Deref.html' title='core::ops::Deref'>Deref</a> for <a class='struct' href='../irsc/struct.Result.html' title='irsc::Result'>Result</a><T></code></h3><div class='impl-items'><h4 id='assoc_type.Target' class='type'><code>type Target = <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, <a class='enum' href='../irsc/enum.IrscError.html' title='irsc::IrscError'>IrscError</a>></code></h4>
<h4 id='method.deref' class='method'><code>fn <a href='http://doc.rust-lang.org/nightly/core/ops/trait.Deref.html#method.deref' class='fnname'>deref</a>(&self) -> &<a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, <a class='enum' href='../irsc/enum.IrscError.html' title='irsc::IrscError'>IrscError</a>></code></h4>
</div><h3 class='impl'><code>impl<T> <a class='trait' href='http://doc.rust-lang.org/nightly/core/ops/trait.DerefMut.html' title='core::ops::DerefMut'>DerefMut</a> for <a class='struct' href='../irsc/struct.Result.html' title='irsc::Result'>Result</a><T></code></h3><div class='impl-items'><h4 id='method.deref_mut' class='method'><code>fn <a href='http://doc.rust-lang.org/nightly/core/ops/trait.DerefMut.html#method.deref_mut' class='fnname'>deref_mut</a>(&mut self) -> &mut <a class='enum' href='http://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><T, <a class='enum' href='../irsc/enum.IrscError.html' title='irsc::IrscError'>IrscError</a>></code></h4>
</div></section>
<section id='search' class="content hidden"></section>
<section class="footer"></section>
<div id="help" class="hidden">
<div class="shortcuts">
<h1>Keyboard shortcuts</h1>
<dl>
<dt>?</dt>
<dd>Show this help dialog</dd>
<dt>S</dt>
<dd>Focus the search field</dd>
<dt>⇤</dt>
<dd>Move up in search results</dd>
<dt>⇥</dt>
<dd>Move down in search results</dd>
<dt>⏎</dt>
<dd>Go to active search result</dd>
</dl>
</div>
<div class="infos">
<h1>Search tricks</h1>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>typedef</code> (or
<code>tdef</code>).
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code>)
</p>
</div>
</div>
<script>
window.rootPath = "../";
window.currentCrate = "irsc";
window.playgroundUrl = "";
</script>
<script src="../jquery.js"></script>
<script src="../main.js"></script>
<script async src="../search-index.js"></script>
</body>
</html>
|