def"><code><span class="keyword">include</span> <a href="../../Bastet/Interface/index.html#module-type-BIFUNCTOR">Bastet.Interface.BIFUNCTOR</a></code></span></summary><dl><dt class="spec type" id="type-t"><a href="#type-t" class="anchor"></a><code><span class="keyword">type</span> <span>('a, 'b) t</span></code></dt></dl><dl><dt class="spec value" id="val-bimap"><a href="#val-bimap" class="anchor"></a><code><span class="keyword">val</span> bimap : <span>(<span class="type-var">'a</span> <span>&#45;&gt;</spa