/em></span>
        for each match found; if <span class="emphasis"><em>submatch</em></span> is -1, then enumerates
        all the text sequences that did not match the expression <span class="emphasis"><em>re</em></span>
        (that is to performs field splitting).
      </p>
<p>
        <span class="bold"><strong>Throws</strong></span>: <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">runtime_error</span></code>
        if the compl