an class="type-var">'a</span>)</span> <a href="../../../Function/Category/index.html#type-t">Function.Category.t</a></span></code></dt><dt class="spec value" id="val-(&lt;.)"><a href="#val-(&lt;.)" class="anchor"></a><code><span class="keyword">val</span> (&lt;.) : <span><span>(<span class="type-var">'a</span>, <span class="type-var">'b</span>)</span> <a href="../../../../Bastet__Function/Semigroupoid/index.html#type-t">Bastet__Function.Semigroupoid.t</a></span> <span>&#45;&gt;</span> <span><span>(<span cl