ACT_NO_EXCEPTS">BOOST_CONTRACT_NO_EXCEPTS</a></code>, and  <code class="computeroutput"><a class="link" href="BOOST_CONTRACT_NO_CHECKS.html" title="Macro BOOST_CONTRACT_NO_CHECKS">BOOST_CONTRACT_NO_CHECKS</a></code>. For example, users can manually program <code class="computeroutput">#ifndef</code> statements in their code using this macro to avoid including the <code class="computeroutput">boost/contract.hpp</code> header all together:</p>
<pre class="programlisting"><span class="preprocessor">#include</s