 the strings and pass them one by one
        to the coroutine.
      </p>
<h5>
<a name="coroutine.coroutine.asymmetric.h2"></a>
        <span class="phrase"><a name="coroutine.coroutine.asymmetric.coroutine_function"></a></span><a class="link" href="asymmetric.html#coroutine.coroutine.asymmetric.coroutine_function">coroutine-function</a>
      </h5>
<p>
        The <span class="emphasis"><em>coroutine-function</em></span> returns <span class="emphasis"><em>void</em></span>
        and takes its counterpart