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<a name="BOOST_CONTRACT_NO_OLDS"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Macro BOOST_CONTRACT_NO_OLDS</span></h2>
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<p>BOOST_CONTRACT_NO_OLDS — Automatically defined by this library when old value copies are not to be performed. </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.contract.core.config_hpp" title="Header <boost/contract/core/config.hpp>">boost/contract/core/config.hpp</a>>
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</span>BOOST_CONTRACT_NO_OLDS</pre></div>
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<div class="refsect1">
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<a name="idm45909320435696"></a><h2>Description</h2>
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<p>This macro is not a configuration macro and this library will generate a compile-time error if users try to define it directly. This library will automatically define this macro when users define both <code class="computeroutput"><a class="link" href="BOOST_CO_idm45028039653664.html" title="Macro BOOST_CONTRACT_NO_POSTCONDITIONS">BOOST_CONTRACT_NO_POSTCONDITIONS</a></code> and <code class="computeroutput"><a class="link" href="BOOST_CONTRACT_NO_EXCEPTS.html" title="Macro BOOST_CONTRACT_NO_EXCEPTS">BOOST_CONTRACT_NO_EXCEPTS</a></code>. Users can manually program <code class="computeroutput">#ifndef</code> statements in their code using this macro to completely disable compilation of old value copies or use the macros defined in <code class="computeroutput">boost/contract_macro.hpp</code> (recommended only for applications where it is truly necessary to completely remove contract code compilation from production code).</p>
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<p><span class="bold"><strong>See Also:</strong></span></p>
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<p> <a class="link" href="boost_contract/tutorial.html#boost_contract.tutorial.old_values" title="Old Values"> Old Values</a>, <a class="link" href="boost_contract/advanced.html#boost_contract.advanced.old_values_copied_at_body" title="Old Values Copied at Body">
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Old Values Copied at Body</a>, <a class="link" href="boost_contract/extras.html#boost_contract.extras.disable_contract_compilation__macro_interface_" title="Disable Contract Compilation (Macro Interface)">
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Disable Contract Compilation</a> </p>
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<td align="right"><div class="copyright-footer">Copyright © 2008-2019 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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