ass="line">                make_pair(age, [](<span class="keyword">auto</span>&amp;&amp; p) -&gt; decltype(<span class="keyword">auto</span>) {</div><div class="line">                    <span class="keywordflow">return</span> <a class="code" href="group__group-functional.html#gaef38cf34324c8edbd3597ae71811d00d">id</a>(std::forward&lt;decltype(p)&gt;(p).age);</div><div class="line">                })</div><div class="line">            );</div><div class="line">        }</div><div class="line">    };</div><d