template value">value</a><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">sequence_type</span><span class="special">::</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">sequence_type</span><span class="special">::</span><span class="identifier">value_type</span> <span class="special">&amp;</span> <span c