277 lines
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277 lines
12 KiB
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<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Go в примерах: Время (Time)</title>
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window.location.href = 'xml';
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window.location.href = 'epoch';
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<body>
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<div class="example" id="time">
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<h2><a href="./">Go в примерах</a>: Время (Time)</h2>
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<table>
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<tr>
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<td class="docs">
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<p>Go предлагает обширную поддержку для времени и
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продолжительности; вот несколько примеров.</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>
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<td class="code leading">
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<a href="http://play.golang.org/p/ZE4n1Jt55m0" 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 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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</td>
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</tr>
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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="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>Начнем с получения текущего 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">now</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">now</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>Вы можете построить структуру <code>time</code>, указав год,
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месяц, день и т.д. Время всегда связано с <code>местоположением</code>,
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т.е. часовым поясом.</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">then</span> <span class="o">:=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">Date</span><span class="p">(</span>
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<span class="mi">2009</span><span class="p">,</span> <span class="mi">11</span><span class="p">,</span> <span class="mi">17</span><span class="p">,</span> <span class="mi">20</span><span class="p">,</span> <span class="mi">34</span><span class="p">,</span> <span class="mi">58</span><span class="p">,</span> <span class="mi">651387237</span><span class="p">,</span> <span class="nx">time</span><span class="p">.</span><span class="nx">UTC</span><span class="p">)</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</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>Вы можете извлечь различные компоненты значения 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">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Year</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Month</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Day</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Hour</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Minute</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Second</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Nanosecond</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Location</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>Получения дня недели доступно через метод <code>Weekday</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">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Weekday</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>Эти методы сравниваются два раза, проверяя,
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происходит ли первый случай до, после или
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одновременно со вторым, соответственно.</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">then</span><span class="p">.</span><span class="nx">Before</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">then</span><span class="p">.</span><span class="nx">After</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">then</span><span class="p">.</span><span class="nx">Equal</span><span class="p">(</span><span class="nx">now</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>Метод <code>Sub</code> возвращает <code>Duration</code>, интервал между
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двумя временами.</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">diff</span> <span class="o">:=</span> <span class="nx">now</span><span class="p">.</span><span class="nx">Sub</span><span class="p">(</span><span class="nx">then</span><span class="p">)</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">diff</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>Мы можем вычислить продолжительность.</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">diff</span><span class="p">.</span><span class="nx">Hours</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">diff</span><span class="p">.</span><span class="nx">Minutes</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">diff</span><span class="p">.</span><span class="nx">Seconds</span><span class="p">())</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">diff</span><span class="p">.</span><span class="nx">Nanoseconds</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>Вы можете использовать <code>Add</code>, чтобы продвинуть
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время на заданную продолжительность, или с <code>-</code>,
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чтобы переместиться назад.</p>
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</td>
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<td class="code">
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<div class="highlight"><pre> <span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Add</span><span class="p">(</span><span class="nx">diff</span><span class="p">))</span>
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<span class="nx">p</span><span class="p">(</span><span class="nx">then</span><span class="p">.</span><span class="nx">Add</span><span class="p">(</span><span class="o">-</span><span class="nx">diff</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 leading">
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<div class="highlight"><pre><span class="gp">$</span> go run time.go
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<span class="go">2012-10-31 15:50:13.793654 +0000 UTC</span>
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<span class="go">2009-11-17 20:34:58.651387237 +0000 UTC</span>
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<span class="go">2009</span>
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<span class="go">November</span>
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<span class="go">17</span>
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<span class="go">20</span>
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<span class="go">34</span>
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<span class="go">58</span>
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<span class="go">651387237</span>
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<span class="go">UTC</span>
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<span class="go">Tuesday</span>
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<span class="go">true</span>
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<span class="go">false</span>
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<span class="go">false</span>
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<span class="go">25891h15m15.142266763s</span>
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<span class="go">25891.25420618521</span>
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<span class="go">1.5534752523711128e+06</span>
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<span class="go">9.320851514226677e+07</span>
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<span class="go">93208515142266763</span>
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<span class="go">2012-10-31 15:50:13.793654 +0000 UTC</span>
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<span class="go">2006-12-05 01:19:43.509120474 +0000 UTC</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>Далее мы рассмотрим время относительно эпохи Unix.</p>
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</td>
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<td class="code empty">
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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="epoch">Epoch</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">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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var codeLines = [];
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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(' now := time.Now()\u000A p(now)\u000A');codeLines.push(' then := time.Date(\u000A 2009, 11, 17, 20, 34, 58, 651387237, time.UTC)\u000A p(then)\u000A');codeLines.push(' p(then.Year())\u000A p(then.Month())\u000A p(then.Day())\u000A p(then.Hour())\u000A p(then.Minute())\u000A p(then.Second())\u000A p(then.Nanosecond())\u000A p(then.Location())\u000A');codeLines.push(' p(then.Weekday())\u000A');codeLines.push(' p(then.Before(now))\u000A p(then.After(now))\u000A p(then.Equal(now))\u000A');codeLines.push(' diff := now.Sub(then)\u000A p(diff)\u000A');codeLines.push(' p(diff.Hours())\u000A p(diff.Minutes())\u000A p(diff.Seconds())\u000A p(diff.Nanoseconds())\u000A');codeLines.push(' p(then.Add(diff))\u000A p(then.Add(-diff))\u000A}\u000A');codeLines.push('');codeLines.push('');
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<script src="site.js" async></script>
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</body>
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</html>
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