/span></span> <span>char <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-rcontains_from"><a href="#val-rcontains_from" class="anchor"></a><code><span><span class="keyword">val</span> rcontains_from : <span>string <span class="arrow">&#45;&gt;</span></span> <span>int <span class="arrow">&#45;&gt;</span></span> <span>char <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><di