" id="val-filter_map_inplace"><a href="#val-filter_map_inplace" class="anchor"></a><code><span><span class="keyword">val</span> filter_map_inplace : <span><span>(<span><span class="xref-unresolved">Z</span>.t <span class="arrow">&#45;&gt;</span></span> <span><span class="type-var">'a</span> <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><span class="type-var">'a</span> <a href="#type-t">t</a></s