/span>
            <span class="special">(</span>
                    <span class="char">'('</span> <span class="special">&gt;&gt;</span> <span class="identifier">double_</span><span class="special">[</span><span class="identifier">ref</span><span class="special">(</span><span class="identifier">rN</span><span class="special">)</span> <span class="special">=</span> <span class="identifier">_1</span><span class="special">]</span>
                        <span class="special">&gt;&gt;</span> <span class="spec