<code><span class="keyword">type</span> <span>'a return</span></code></dt></dl><dl><dt class="spec value" id="val-(@-&gt;)"><a href="#val-(@-&gt;)" class="anchor"></a><code><span class="keyword">val</span> (@-&gt;) : <span><span class="type-var">'a</span> <a href="../index.html#type-typ">typ</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> <a href="index.html#type-fn">fn</a></span> <span>&#45;&gt;</span> <span><span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span class