;</span></span> <span><span class="label">f</span>:<span>(<span><a href="../PulseValueHistory/index.html#type-event">ValueHistory.event</a> <span class="arrow">&#45;&gt;</span></span> <span><span class="type-var">'a</span> option</span>)</span> <span class="arrow">&#45;&gt;</span></span> <span><span class="type-var">'a</span> option</span></span></code></div><div class="spec-doc"><p><code>find_map</code> applied to history events in reverse order</p></div></div><div class="odoc-spec"><div class="spec value 