<span class="identifier">set</span></code></code> or <code class="literal"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span> <span class="identifier">erase</span><span class="special">()</span></code></code> method it removes values
            equal to these passed as a range. Furthermore this method removes only
            one value for each one passed in the range, not all equal values.
          </p>
<p>
            It cal