class="special">&gt;(</span><span class="string">"123"</span><span class="special">).</span><span class="identifier">value</span><span class="special">();</span> <span class="comment">// No converter provided</span>
</pre>
<p>
      However, after <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">cnv</span><span class="special">::</span><span class="identifier">by_default</span></code>
      is defined simply as:
    </p>
<p>
</p>
<pre 