n></code></dt><dd><p><code>yield x</code> is a stream with a single element <code>x</code>.</p></dd></dl><dl><dt class="spec value" id="val-let*"><a href="#val-let*" class="anchor"></a><code><span class="keyword">val</span> let* : <span><span class="type-var">'a</span> <a href="../index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> <a href="../index.html#type-t">t</a></span>)</span> <span>&#45;&gt;</span