et+!"><a href="#val-let+!" class="anchor"></a><code><span class="keyword">val</span> let+! : <span><span class="type-var">'a</span> list</span> <span>&#45;&gt;</span> <span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> unit)</span> <span>&#45;&gt;</span> unit</code></dt><dd><p>Iterative let binding (The expression in the in must be unit). This replace implicitly a unit member of the monad (that is assumed to be uninteresting) to a true unit. In other words, it's an <code>iter</code>: <code>let+! 