>&#45;&gt;</span></span> <span class="type-var">'accum</span>)</span> <span class="arrow">&#45;&gt;</span></span>
  <span><span>(<span class="type-var">'t</span>, <span class="type-var">'elt</span>, <span class="type-var">'accum</span>)</span> <span class="xref-unresolved">IStdlib</span>.IStd.Container.fold</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-fold_of_pervasives_map_fold"><a href="#val-fold_of_pervasives_map_fold" class="anchor"></a><code><span><spa