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28<h2><span class="refentrytitle">Function bool_switch</span></h2>
29<p>boost::program_options::bool_switch &#8212; </p>
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31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis">
33<span class="type">BOOST_PROGRAM_OPTIONS_DECL <a href="typed_value.html" title="Class template typed_value">typed_value</a>&lt; <span class="bold"><strong>bool</strong></span> &gt; *</span> bool_switch();
34<span class="type">BOOST_PROGRAM_OPTIONS_DECL <a href="typed_value.html" title="Class template typed_value">typed_value</a>&lt; <span class="bold"><strong>bool</strong></span> &gt; *</span> bool_switch(<span class="bold"><strong>bool</strong></span> * v);</pre></div>
35<div class="refsect1" lang="en">
36<a name="id2728092"></a><h2>Description</h2>
37<p>Works the same way as the 'value&lt;bool&gt;' function, but the created value_semantic won't accept any explicit value. So, if the option is present on the command line, the value will be 'true'. </p>
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