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      <h1 class="title">std/rdstdin</h1>
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  <li>
  <a class="reference reference-toplevel" href="#6" id="56">Imports</a>
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  <details open>
    <summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
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      <ul class="simple nested-toc-section">readLineFromStdin
  <li><a class="reference" href="#readLineFromStdin%2Cstring" title="readLineFromStdin(prompt: string): string">readLineFromStdin(prompt: string): string</a></li>
<li><a class="reference" href="#readLineFromStdin%2Cstring%2Cstring" title="readLineFromStdin(prompt: string; line: var string): bool">readLineFromStdin(prompt: string; line: var string): bool</a></li>

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    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/impure/rdstdin.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/impure/rdstdin.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

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    <p class="module-desc">This module contains code for reading from <span id="stdin_1">stdin</span>. On UNIX the linenoise library is wrapped and set up to provide default key bindings (e.g. you can navigate with the arrow keys). On Windows <tt class="docutils literal"><span class="pre"><span class="Identifier">system</span><span class="Operator">.</span><span class="Identifier">readLine</span></span></tt> is used. This suffices because Windows' console already provides the wanted functionality.
<p><strong class="examples_text">Example: cmd: -r:off</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">rdstdin</span>
<span class="Identifier">echo</span> <span class="Identifier">readLineFromStdin</span><span class="Punctuation">(</span><span class="StringLit">&quot;Is Nim awesome? (Y/n): &quot;</span><span class="Punctuation">)</span>
<span class="Keyword">var</span> <span class="Identifier">line</span><span class="Punctuation">:</span> <span class="Identifier">string</span>
<span class="Keyword">while</span> <span class="Identifier">true</span><span class="Punctuation">:</span>
  <span class="Keyword">let</span> <span class="Identifier">ok</span> <span class="Operator">=</span> <span class="Identifier">readLineFromStdin</span><span class="Punctuation">(</span><span class="StringLit">&quot;How are you? &quot;</span><span class="Punctuation">,</span> <span class="Identifier">line</span><span class="Punctuation">)</span>
  <span class="Keyword">if</span> <span class="Keyword">not</span> <span class="Identifier">ok</span><span class="Punctuation">:</span> <span class="Keyword">break</span> <span class="Comment"># ctrl-C or ctrl-D will cause a break</span>
  <span class="Keyword">if</span> <span class="Identifier">line</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">&gt;</span> <span class="DecNumber">0</span><span class="Punctuation">:</span> <span class="Identifier">echo</span> <span class="Identifier">line</span>
<span class="Identifier">echo</span> <span class="StringLit">&quot;exiting&quot;</span></pre></p>
    <div class="section" id="6">
  <h1><a class="toc-backref" href="#6">Imports</a></h1>
  <dl class="item">
    <a class="reference external" href="linenoise.html">linenoise</a>
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<div class="section" id="12">
  <h1><a class="toc-backref" href="#12">Procs</a></h1>
  <dl class="item">
    <div id="readLineFromStdin-procs-all">
  <div id="readLineFromStdin,string">
  <dt><pre><span class="Keyword">proc</span> <a href="#readLineFromStdin%2Cstring"><span class="Identifier">readLineFromStdin</span></a><span class="Other">(</span><span class="Identifier">prompt</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a> {.<span class="Identifier">inline</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Identifier">IOError</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Identifier">ReadIOEffect</span><span class="Other">,</span> <span class="Identifier">WriteIOEffect</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/impure/rdstdin.nim#L72" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/impure/rdstdin.nim#L72" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

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<div id="readLineFromStdin,string,string">
  <dt><pre><span class="Keyword">proc</span> <a href="#readLineFromStdin%2Cstring%2Cstring"><span class="Identifier">readLineFromStdin</span></a><span class="Other">(</span><span class="Identifier">prompt</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">;</span> <span class="Identifier">line</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.
    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><a href="exceptions.html#ReadIOEffect"><span class="Identifier">ReadIOEffect</span></a><span class="Other">,</span> <a href="exceptions.html#WriteIOEffect"><span class="Identifier">WriteIOEffect</span></a><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/impure/rdstdin.nim#L60" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/impure/rdstdin.nim#L60" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

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