me="idm43994"></a>
        </p>
<p>
          Find the first occurrence of any of the characters within the string.
        </p>
<h6>
<a name="json.ref.boost__json__string.find_first_of.h0"></a>
          <span class="phrase"><a name="json.ref.boost__json__string.find_first_of.synopsis"></a></span><a class="link" href="find_first_of.html#json.ref.boost__json__string.find_first_of.synopsis">Synopsis</a>
        </h6>
<pre class="programlisting"><span class="identifier">std</span><span class="special">::</spa