val</span> label : string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-ff_f"><a href="#val-ff_f" class="anchor"></a><code><span><span class="keyword">val</span> ff_f : <span><a href="../../argument-1-Core/A/index.html#type-elt">Core.A.elt</a> <span class="arrow">&#45;&gt;</span></span> <a href="../../argument-1-Core/index.html#type-t">Core.t</a> * <a href="../../argument-1-Core/index.html#type-t">Core.t</a> * <a href="../../argument-1-Core/index.html#type-t">Core.