ize the comma <code class="computeroutput"><span class="char">','</span></code>.
          In this case, the Kleene Star is modifying a more complex parser, namely,
          the one generated by the expression:
        </p>
<pre class="programlisting"><span class="special">(</span><span class="identifier">char_</span><span class="special">(</span><span class="char">','</span><span class="special">)</span> <span class="special">&gt;&gt;</span> <span class="identifier">double_</span><span class="special">)</