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<a name="BOOST_SCOPE_EXIT_ID"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Macro BOOST_SCOPE_EXIT_ID</span></h2>
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<p>BOOST_SCOPE_EXIT_ID — This macro allows to expand multiple scope exit declarations on the same line. </p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
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<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="reference.html#header.boost.scope_exit_hpp" title="Header <boost/scope_exit.hpp>">boost/scope_exit.hpp</a>>
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</span>BOOST_SCOPE_EXIT_ID(id, capture_list)</pre></div>
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<div class="refsect1">
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<a name="id877020"></a><h2>Description</h2>
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<p>This macro is equivalent to <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT.html" title="Macro BOOST_SCOPE_EXIT">BOOST_SCOPE_EXIT</a></code> but it can be expanded multiple times on the same line if different identifiers <code class="computeroutput">id</code> are provided for each expansion (see <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT.html" title="Macro BOOST_SCOPE_EXIT">BOOST_SCOPE_EXIT</a></code> for more information).</p>
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<p><span class="bold"><strong>Parameters:</strong></span> </p>
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<div class="informaltable"><table class="table">
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<td><span class="bold"><strong><code class="computeroutput">id</code></strong></span></td>
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<td>A unique identifier token which can be concatenated by the preprocessor (<code class="computeroutput">__LINE__</code>, <code class="computeroutput">scope_exit_number_1_on_line_123</code>, a combination of alphanumeric tokens, etc). </td>
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</tr>
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<tr>
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<td><span class="bold"><strong><code class="computeroutput">capture_list</code></strong></span></td>
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<td>Same as the <code class="computeroutput">capture_list</code> parameter of the <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT.html" title="Macro BOOST_SCOPE_EXIT">BOOST_SCOPE_EXIT</a></code> macro. </td>
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<p>
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</p>
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<p><span class="bold"><strong>Note:</strong></span> This macro can be useful when the scope exit macros are expanded within user-defined macros (because nested macros expand on the same line). On some compilers (e.g., MSVC which supports the non standard <code class="computeroutput">__COUNTER__</code> macro) it might not be necessary to use this macro but the use of this macro is always necessary to ensure portability when expanding multiple scope exit declarations on the same line.</p>
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<p><span class="bold"><strong>See:</strong></span> <a class="link" href="scope_exit/tutorial.html" title="Tutorial"> Tutorial</a> section, <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT.html" title="Macro BOOST_SCOPE_EXIT">BOOST_SCOPE_EXIT</a></code>, <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT_END_ID.html" title="Macro BOOST_SCOPE_EXIT_END_ID">BOOST_SCOPE_EXIT_END_ID</a></code>, <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT_ALL_ID.html" title="Macro BOOST_SCOPE_EXIT_ALL_ID">BOOST_SCOPE_EXIT_ALL_ID</a></code>, <code class="computeroutput"><a class="link" href="BOOST_SCOPE_EXIT_ID_TPL.html" title="Macro BOOST_SCOPE_EXIT_ID_TPL">BOOST_SCOPE_EXIT_ID_TPL</a></code>. </p>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2006-2012 Alexander Nasonov, Lorenzo Caminiti<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 a 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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