pan>, <span class="type-var">'arg_payload</span>)</span> <a href="../index.html#type-name_matcher">name_matcher</a></span></code></dt><dt class="spec value" id="val-(&amp;+...&gt;::)"><a href="#val-(&amp;+...&gt;::)" class="anchor"></a><code><span class="keyword">val</span> (&amp;+...&gt;::) : <span><span>(<span class="type-var">'context</span>, <span class="type-var">'f_in</span>, <span class="type-var">'f_out</span>, <a href="../index.html#type-accept_more">accept_more</a>, <span class="type-var">'ar