an class="p">.</span><span class="n">transform</span><span class="p">([](</span><span class="kt">int</span> <span class="n">x</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="n">x</span> <span class="o">*</span> <span class="n">x</span><span class="p">;</span> <span class="p">});</span>
</pre></div>
</div>
<p>The proposal <a class="reference external" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4165.pdf">N4165</a>
for Unified Call Syntax(U