span class="special">&lt;</span> <span class="identifier">Range</span><span class="special">,</span> <span class="identifier">ForwardIterator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">value</span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span> 
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