span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span class="type-var">'a</span></code></dt><dd><p><code>fold m t</code> folds the elements of <code>t</code> with <code>m.op</code>. E.g.,</p><pre><code class="ml"># Foldable.List.fold (module Monoid.Int.Sum) [1;2;3;4];;
- : int = 10</code></pre></dd></dl><dl><dt class="spec value" id="val-fold_map"><a href="#val-fold_map" class="anchor"></a><code><span class="keyword">val</span> fol