        case.
        </p>
<p>
          If <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&amp;&gt;</span></code>
          would assign just like <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span></code> does, you would never be able to use
          Optional's assignment without explicitly handling the previous initialization
          state unless yo