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211 lines
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<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Go в примерах: Форматирование времени (Time Formatting / Parsing)</title>
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<div class="example" id="time-formatting-parsing">
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<h2><a href="./">Go в примерах</a>: Форматирование времени (Time Formatting / Parsing)</h2>
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<table>
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<tr>
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<td class="docs">
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<p>Go supports time formatting and parsing via
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pattern-based layouts.</p>
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</td>
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<td class="code empty leading">
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<td class="docs">
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<td class="code leading">
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<a href="http://play.golang.org/p/G61ruGfMQZA" target="_blank"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
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<div class="highlight"><pre><span class="kn">package</span> <span class="nx">main</span>
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</pre></div>
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</td>
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<tr>
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<td class="docs">
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</td>
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<td class="code leading">
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<div class="highlight"><pre><span class="kn">import</span> <span class="p">(</span>
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<span class="s">"fmt"</span>
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<span class="s">"time"</span>
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<span class="p">)</span>
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</pre></div>
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<tr>
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<td class="docs">
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<td class="code leading">
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<div class="highlight"><pre><span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
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<span class="nx">p</span> <span class="o">:=</span> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span>
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</pre></div>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p>Вот пример форматирования времени в соответствии с
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RFC3339 с использованием соответствующей константы.</p>
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</td>
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<td class="code leading">
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<div class="highlight"><pre> <span class="nx">t</span> <span class="o">:=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">Now</span><span class="p">()</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">t</span><span class="p">.</span><span class="nx">Format</span><span class="p">(</span><span class="nx">time</span><span class="p">.</span><span class="nx">RFC3339</span><span class="p">))</span>
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</pre></div>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p>Парсинг значений использует тот же синтаксис, что и <code>Format</code>.</p>
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</td>
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<td class="code leading">
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<div class="highlight"><pre> <span class="nx">t1</span><span class="p">,</span> <span class="nx">e</span> <span class="o">:=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">Parse</span><span class="p">(</span>
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<span class="nx">time</span><span class="p">.</span><span class="nx">RFC3339</span><span class="p">,</span>
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<span class="s">"2012-11-01T22:08:41+00:00"</span><span class="p">)</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">t1</span><span class="p">)</span>
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</pre></div>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p><code>Форматирование</code> и <code>парсинг</code> используют аргументы на
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основе примеров. Обычно вы используете константу из пакета
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<code>time</code>, но вы также можете предоставить собственные шаблоны.
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Они должны использовать время в формате <code>Mon Jan 2
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15:04:05 MST 2006</code>, чтобы вывести на экран. Время в примере
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должно быть точно таким, как показано: 2006 год, 15 для часа,
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понедельник для дня недели и т.д.</p>
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</td>
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<td class="code leading">
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<div class="highlight"><pre> <span class="nx">p</span><span class="p">(</span><span class="nx">t</span><span class="p">.</span><span class="nx">Format</span><span class="p">(</span><span class="s">"3:04PM"</span><span class="p">))</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">t</span><span class="p">.</span><span class="nx">Format</span><span class="p">(</span><span class="s">"Mon Jan _2 15:04:05 2006"</span><span class="p">))</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">t</span><span class="p">.</span><span class="nx">Format</span><span class="p">(</span><span class="s">"2006-01-02T15:04:05.999999-07:00"</span><span class="p">))</span>
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<span class="nx">form</span> <span class="o">:=</span> <span class="s">"3 04 PM"</span>
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<span class="nx">t2</span><span class="p">,</span> <span class="nx">e</span> <span class="o">:=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">Parse</span><span class="p">(</span><span class="nx">form</span><span class="p">,</span> <span class="s">"8 41 PM"</span><span class="p">)</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">t2</span><span class="p">)</span>
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</pre></div>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p>Для числовых представлений вы также можете использовать
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стандартное форматирование строки с методами времени.</p>
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</td>
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<td class="code leading">
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<div class="highlight"><pre> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Printf</span><span class="p">(</span><span class="s">"%d-%02d-%02dT%02d:%02d:%02d-00:00\n"</span><span class="p">,</span>
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<span class="nx">t</span><span class="p">.</span><span class="nx">Year</span><span class="p">(),</span> <span class="nx">t</span><span class="p">.</span><span class="nx">Month</span><span class="p">(),</span> <span class="nx">t</span><span class="p">.</span><span class="nx">Day</span><span class="p">(),</span>
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<span class="nx">t</span><span class="p">.</span><span class="nx">Hour</span><span class="p">(),</span> <span class="nx">t</span><span class="p">.</span><span class="nx">Minute</span><span class="p">(),</span> <span class="nx">t</span><span class="p">.</span><span class="nx">Second</span><span class="p">())</span>
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</pre></div>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p><code>Parse</code> вернет ошибку. если не сможет распарсить данные.</p>
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</td>
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<td class="code">
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<div class="highlight"><pre> <span class="nx">ansic</span> <span class="o">:=</span> <span class="s">"Mon Jan _2 15:04:05 2006"</span>
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<span class="nx">_</span><span class="p">,</span> <span class="nx">e</span> <span class="p">=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">Parse</span><span class="p">(</span><span class="nx">ansic</span><span class="p">,</span> <span class="s">"8:41PM"</span><span class="p">)</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">e</span><span class="p">)</span>
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<span class="p">}</span>
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</pre></div>
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</td>
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</tr>
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</table>
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<table>
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<tr>
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<td class="docs">
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</td>
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<td class="code">
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<div class="highlight"><pre><span class="gp">$</span> go run time-formatting-parsing.go
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<span class="go">2014-04-15T18:00:15-07:00</span>
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<span class="go">2012-11-01 22:08:41 +0000 +0000</span>
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<span class="go">6:00PM</span>
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<span class="go">Tue Apr 15 18:00:15 2014</span>
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<span class="go">2014-04-15T18:00:15.161182-07:00</span>
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<span class="go">0000-01-01 20:41:00 +0000 UTC</span>
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<span class="go">2014-04-15T18:00:15-00:00</span>
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<span class="go">parsing time "8:41PM" as "Mon Jan _2 15:04:05 2006": ...</span>
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</pre></div>
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</td>
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</tr>
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</table>
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<p class="next">
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Следующий пример: <a href="random-numbers">Случайные числа (Random Numbers)</a>.
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</p>
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<p class="footer">
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by <a href="https://markmcgranaghan.com">Mark McGranaghan</a> | <a href="https://github.com/mmcgrana/gobyexample/blob/master/examples/time-formatting-parsing">source</a> | <a href="https://github.com/mmcgrana/gobyexample#license">license</a>
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<br/>
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переведено Nick S. | <a href="https://github.com/badkaktus/gobyexample">исходники</a>
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</p>
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</div>
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<script>
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codeLines.push('');codeLines.push('package main\u000A');codeLines.push('import (\u000A \"fmt\"\u000A \"time\"\u000A)\u000A');codeLines.push('func main() {\u000A p := fmt.Println\u000A');codeLines.push(' t := time.Now()\u000A p(t.Format(time.RFC3339))\u000A');codeLines.push(' t1, e := time.Parse(\u000A time.RFC3339,\u000A \"2012-11-01T22:08:41+00:00\")\u000A p(t1)\u000A');codeLines.push(' p(t.Format(\"3:04PM\"))\u000A p(t.Format(\"Mon Jan _2 15:04:05 2006\"))\u000A p(t.Format(\"2006-01-02T15:04:05.999999-07:00\"))\u000A form := \"3 04 PM\"\u000A t2, e := time.Parse(form, \"8 41 PM\")\u000A p(t2)\u000A');codeLines.push(' fmt.Printf(\"%d-%02d-%02dT%02d:%02d:%02d-00:00\\n\",\u000A t.Year(), t.Month(), t.Day(),\u000A t.Hour(), t.Minute(), t.Second())\u000A');codeLines.push(' ansic := \"Mon Jan _2 15:04:05 2006\"\u000A _, e = time.Parse(ansic, \"8:41PM\")\u000A p(e)\u000A}\u000A');codeLines.push('');
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