tml" title="Class connection">signals2::connection</a></code> for the
        newly-created signal/slot connection?</p></li>
<li class="listitem">
<p><span class="bold"><strong>Gateway to operators -=,
        +</strong></span>: when one has added a connection operator
        <code class="computeroutput">+=</code>, it seems natural to have a disconnection
        operator <code class="computeroutput">-=</code>. However, this presents problems when
        the library allows arbitrary function objects to im