an><a class="link" href="one_of.html#the_boost_algorithm_library.CXX11.one_of.complexity">Complexity</a>
      </h5>
<p>
        All of the variants of <code class="computeroutput"><span class="identifier">one_of</span></code>
        and <code class="computeroutput"><span class="identifier">one_of_equal</span></code> run in
        <span class="emphasis"><em>O(N)</em></span> (linear) time; that is, they compare against each
        element in the list once. If more than one of the elements in the sequence
