old_Map/index.html">Fold_Map</a> : <span class="keyword">functor</span> (<a href="Fold_Map/argument-1-M/index.html">M</a> : <a href="../index.html#module-type-MONOID">MONOID</a>) <span>&#45;&gt;</span> <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-Fold_Map_Any"><a href="#module-Fold_Map_Any" class="anchor"></a><code><span class="keyword">module</span> <a href="Fold_Map_Any/index.html">Fold_Map_Any</a> : <span class="keyword">functor</sp