n> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span>equal:<span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span class="type-var">'a</span> <span>&#45;&gt;</span> bool)</span></span> <span>&#45;&gt;</span> <span><span>(<span class="type-var">'a</span> * <span class="type-var">'a</span>)</span> option</span></code></dt><dt class="spec value" id="val-remove_consecutive_duplicates"><a href="#val-remove_consecutive_duplicates" class="anchor"></a><code><span class="keyword">val