f="../../index.html">alg_structs</a> &#x00BB; <a href="../index.html">Alg_structs__Foldable</a> &#x00BB; Option</nav><h1>Module <code>Alg_structs__Foldable.Option</code></h1><p>Folds over optional values...</p><p><code>Option.fold_right ~f t ~init</code> is <code>f x init</code> if <code>t</code> is <code>Some x</code> or <code>init</code> if <code>t</code> is <code>None</code>.</p></header><div><div class="spec include"><div class="doc"><details open="open"><summary><span class="def"><code><span class="key