47 lines
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47 lines
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<div class="titlepage"><div><div><h4 class="title">
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<a name="asio.reference.deferred_conditional.then"></a><a class="link" href="then.html" title="deferred_conditional::then">deferred_conditional::then</a>
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<a class="indexterm" name="asio.indexterm.deferred_conditional.then"></a>
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Set the
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true branch of the conditional.
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">></span>
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<span class="identifier">deferred_conditional</span><span class="special"><</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">OnFalse</span> <span class="special">></span> <span class="identifier">then</span><span class="special">(</span>
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<span class="identifier">T</span> <span class="identifier">on_true</span><span class="special">,</span>
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<span class="keyword">typename</span> <span class="identifier">constraint</span><span class="special"><</span> <span class="identifier">is_deferred</span><span class="special"><</span> <span class="identifier">T</span> <span class="special">>::</span><span class="identifier">value</span> <span class="special">>::</span><span class="identifier">type</span> <span class="special">*</span> <span class="special">=</span> <span class="number">0</span><span class="special">,</span>
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<span class="keyword">typename</span> <span class="identifier">constraint</span><span class="special"><</span> <span class="identifier">is_same</span><span class="special"><</span> <span class="keyword">typename</span> <span class="identifier">conditional</span><span class="special"><</span> <span class="keyword">true</span><span class="special">,</span> <span class="identifier">OnTrue</span><span class="special">,</span> <span class="identifier">T</span> <span class="special">>::</span><span class="identifier">type</span><span class="special">,</span> <span class="identifier">deferred_noop</span> <span class="special">>::</span><span class="identifier">value</span> <span class="special">>::</span><span class="identifier">type</span> <span class="special">*</span> <span class="special">=</span> <span class="number">0</span><span class="special">);</span>
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</pre>
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<div class="copyright-footer">Copyright © 2003-2023 Christopher M. Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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