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286efd2012-03-24Henrik Grubbström (Grubba) <a href='../../ex/cpp_3A_3A.html'><b class='head'>cpp::</b></a> <script></script> <noscript> <div class='sidebar'> <a href='../../ex/cpp_3A_3A/index.html'><b>Symbol index</b></a><br /> </div> </noscript>
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36ee1e2015-10-12Pontus Östlund  <div class="content"> <div class="navbox"> <nav> <div class="sidebar"> <a href="../../ex/cpp_3A_3A/constant.html" class="prev"><span>&#10148;</span> constant()</a> <a href="../../ex/cpp_3A_3A/efun.html" class="next">efun() <span>&#10148;</span></a> </div> </nav> </div> <div class="contentbox"> <article> <h1>Method defined()</h1>
286efd2012-03-24Henrik Grubbström (Grubba)  <hr /> <dl class='group--doc'> <dt class='head--type'><span class='homogen--type'>Method</span> <span class='homogen--name'><b>defined</b></span> </dt> <dd><p><code><code class='datatype'>bool</code> <b><span class='method'>defined</span>(</b><code class='datatype'>mixed</code> <code class='argument'>identifier</code><b>)</b></code></p></dd> <dt class='head--doc'>Description</dt> <dd class='body--doc'><p>Check whether an identifier is a cpp macro or not.</p> </dd> <dt class='head--doc'>Returns</dt> <dd class='body--doc'><p><a class='ms reference' href='../cpp_3A_3A/defined.html'>defined</a> returns true if the symbol given as argument is defined.</p> </dd> <dt class='head--doc'>Note</dt>
82f7b82018-01-12Stephen R. van den Berg <dd class='body--doc'><p><tt>#if defined(MY_DEF)</tt> is equivalent to
286efd2012-03-24Henrik Grubbström (Grubba)  <tt>#ifdef MY_DEF</tt>.</p> </dd> <dt class='head--doc'>See also</dt> <dd class='body--doc'><p><a class='ms reference' href='../cpp_3A_3A/defined.html'>#if</a>, <a class='ms reference' href='../cpp_3A_3A/defined.html'>#ifdef</a>, <a class='ms reference' href='../cpp_3A_3A/constant.html'>constant()</a></p> </dd></dl>
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