span> <span class="identifier">element_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="map.html#id673414-bb"><span class="identifier">erase</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">element_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</sp