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| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="core.ignore_unused"></a><a class="link" href="ignore_unused.html" title="ignore_unused">ignore_unused</a> |
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| <div class="toc"><dl class="toc"> |
| <dt><span class="section"><a href="ignore_unused.html#core.ignore_unused.header_boost_core_ignore_unused_">Header |
| <boost/core/ignore_unused.hpp></a></span></dt> |
| <dt><span class="section"><a href="ignore_unused.html#core.ignore_unused.acknowledgments">Acknowledgments</a></span></dt> |
| </dl></div> |
| <div class="simplesect"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="idp86442256"></a>Authors</h3></div></div></div> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"> |
| Adam Wulkiewicz |
| </li></ul></div> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="core.ignore_unused.header_boost_core_ignore_unused_"></a><a class="link" href="ignore_unused.html#core.ignore_unused.header_boost_core_ignore_unused_" title="Header <boost/core/ignore_unused.hpp>">Header |
| <boost/core/ignore_unused.hpp></a> |
| </h3></div></div></div> |
| <p> |
| The header <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">ignore_unused</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> |
| defines the function template <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">ignore_unused</span><span class="special">()</span></code>. It may be used to suppress the "unused |
| variable" or "unused local typedefs" compiler warnings when |
| the variable or typedef can't be removed or commented out, e.g. when some |
| blocks of the code are conditionally activated. C++11 variadic templates |
| are used if they're supported, otherwise they're emulated with overloads. |
| </p> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="core.ignore_unused.header_boost_core_ignore_unused_.usage"></a><a class="link" href="ignore_unused.html#core.ignore_unused.header_boost_core_ignore_unused_.usage" title="Usage">Usage</a> |
| </h4></div></div></div> |
| <pre class="programlisting"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">ignore_unused</span><span class="special">(</span><span class="identifier">v1</span><span class="special">,</span> <span class="identifier">v2</span><span class="special">,</span> <span class="identifier">v3</span><span class="special">);</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">ignore_unused</span><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">T3</span><span class="special">>();</span> |
| </pre> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="core.ignore_unused.header_boost_core_ignore_unused_.example"></a><a class="link" href="ignore_unused.html#core.ignore_unused.header_boost_core_ignore_unused_.example" title="Example">Example</a> |
| </h4></div></div></div> |
| <pre class="programlisting"><span class="keyword">int</span> <span class="identifier">fun</span><span class="special">(</span> <span class="keyword">int</span> <span class="identifier">foo</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">bar</span> <span class="special">)</span> |
| <span class="special">{</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">ignore_unused</span><span class="special">(</span><span class="identifier">bar</span><span class="special">);</span> |
| <span class="preprocessor">#ifdef</span> <span class="identifier">ENABLE_DEBUG_OUTPUT</span> |
| <span class="keyword">if</span> <span class="special">(</span> <span class="identifier">foo</span> <span class="special"><</span> <span class="identifier">bar</span> <span class="special">)</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cerr</span> <span class="special"><<</span> <span class="string">"warning! foo < bar"</span><span class="special">;</span> |
| <span class="preprocessor">#endif</span> |
| <span class="keyword">return</span> <span class="identifier">foo</span> <span class="special">+</span> <span class="number">2</span><span class="special">;</span> |
| <span class="special">}</span> |
| </pre> |
| </div> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="core.ignore_unused.acknowledgments"></a><a class="link" href="ignore_unused.html#core.ignore_unused.acknowledgments" title="Acknowledgments">Acknowledgments</a> |
| </h3></div></div></div> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">ignore_unused</span><span class="special">()</span></code> |
| was contributed by Adam Wulkiewicz. |
| </p> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2014 Peter Dimov<br>Copyright © 2014 Glen Fernandes<br>Copyright © 2014 Andrey Semashev<p> |
| Distributed under the <a href="http://boost.org/LICENSE_1_0.txt" target="_top">Boost |
| Software License, Version 1.0</a>. |
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