n> <span class="n">e</span><span class="p">.</span><span class="n">what</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
  <span class="p">}</span>
</code></pre></div><a href="https://github.com/boostorg/outcome/tree/master/doc/src/snippets/boost-only/asio_integration.cpp#L73" class="code-snippet-url" target="_blank">View this code on Github</a></div>


<p>The default ASIO implementation alw