"val-mapi"><a href="#val-mapi" class="anchor"></a><code><span><span class="keyword">val</span> mapi : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span><span class="label">f</span>:<span>(<span><a href="#type-key">key</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="../index.html#type-out_of_map_t">out_of_map_t</a> <span class="arrow">&#45;&gt;</span></span> <a href="../index.html#type-in_map_t">in_map_t</a>)</span> <span class="arrow">&#45;&gt;</span></span> <a h