182 lines
6.7 KiB
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182 lines
6.7 KiB
Plaintext
Generated
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Go в примерах: Аргументы командной строки (Command-Line Arguments)</title>
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<link rel=stylesheet href="site.css">
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</head>
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<script>
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window.location.href = 'testing';
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if (e.key == "ArrowRight") {
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window.location.href = 'command-line-flags';
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<body>
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<div class="example" id="command-line-arguments">
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<h2><a href="./">Go в примерах</a>: Аргументы командной строки (Command-Line Arguments)</h2>
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<table>
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<tr>
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<td class="docs">
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<p><a href="http://en.wikipedia.org/wiki/Command-line_interface#Arguments"><em>Аргументы командной строки</em></a>
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являются распространенным способом параметризации
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выполнения программ. Например, <code>go run hello.go</code>
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использует аргументы <code>run</code> и <code>hello.go</code> для программы
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<code>go</code>.</p>
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</td>
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<td class="code empty leading">
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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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<a href="http://play.golang.org/p/wSDrVn9TIK5" 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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<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">"os"</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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</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>os.Args</code> предоставляет доступ к необработанным
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аргументам командной строки. Обратите внимание,
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что первое значение в этом срезе - это путь к
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программе, а os.Args [1:] содержит аргументы
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программы.</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">argsWithProg</span> <span class="o">:=</span> <span class="nx">os</span><span class="p">.</span><span class="nx">Args</span>
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<span class="nx">argsWithoutProg</span> <span class="o">:=</span> <span class="nx">os</span><span class="p">.</span><span class="nx">Args</span><span class="p">[</span><span class="mi">1</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 получить отдельные аргументы с
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обычной индексацией.</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">arg</span> <span class="o">:=</span> <span class="nx">os</span><span class="p">.</span><span class="nx">Args</span><span class="p">[</span><span class="mi">3</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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</td>
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<td class="code">
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<div class="highlight"><pre> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span><span class="p">(</span><span class="nx">argsWithProg</span><span class="p">)</span>
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<span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span><span class="p">(</span><span class="nx">argsWithoutProg</span><span class="p">)</span>
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<span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span><span class="p">(</span><span class="nx">arg</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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<p>Чтобы поэкспериментировать с аргументами командной
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строки, лучше сначала создать двоичный файл с
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помощью <code>go build</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="gp">$</span> go build command-line-arguments.go
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<span class="gp">$</span> ./command-line-arguments a b c d
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<span class="go">[./command-line-arguments a b c d] </span>
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<span class="go">[a b c d]</span>
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<span class="go">c</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 более сложную обработку командной
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строки с флагами.</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="command-line-flags">Флаги командной строки (Command-Line Flags)</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/command-line-arguments">source</a> | <a href="https://github.com/mmcgrana/gobyexample#license">license</a>
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</p>
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</div>
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<script>
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</script>
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