t-2-S/index.html#type-t">S.t</a>, <a href="module-type-SEMIGROUP_F/argument-1-T/index.html#type-t">T.t</a>)</span> Stdlib.result</span></code></div><div class="spec module-type" id="module-type-FUNCTOR_F"><a href="#module-type-FUNCTOR_F" class="anchor"></a><code><span class="keyword">module</span> <span class="keyword">type</span> <a href="module-type-FUNCTOR_F/index.html">FUNCTOR_F</a> = <span class="keyword">functor</span> (<a href="module-type-FUNCTOR_F/argument-1-T/index.html">T</a> : <a href="../Baste