> then <code>concat</code>.</p><p>TODO: find a clean way of doing conditional compilation, otherwise this will shadow the official <a href="https://caml.inria.fr/pub/docs/manual-ocaml/libref/List.html#VALconcat_map"><code>concat_map</code></a> in 4.10</p></dd></dl><dl><dt class="spec value" id="val-find_map"><a href="#val-find_map" class="anchor"></a><code><span class="keyword">val</span> find_map : <span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> option<