trong></span>: Returns an a pair of node_ptr delimiting a range containing all elements that are equivalent to "key" according to "comp" or an empty range that indicates the position where those elements would be if they there are no equivalent elements.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic.</p>
<p><span class="bold"><strong>Throws</strong></span>: If "comp" throws. </p>
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<pre class="literallayout"><span class="keyword">template</span><span cla