n> option</span> <span class="arrow">&#45;&gt;</span></span> <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 class="type-var">'a</span> option</span></span></code></div><div class="spec-doc"><p>Like <code>Option.bind</code> but keeps continuing the further evaluation with <code>default</code> input when the first parameter is <code>None</code>.<