or"></a><code><span class="keyword">val</span> (=&lt;&lt;) : <span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> <a href="../Monad/index.html#type-t">Monad.t</a></span>)</span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="../Monad/index.html#type-t">Monad.t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> <a href="../Monad/index.html#type-t">Monad.t</a></span></code></dt><dt class="spec value" id="val-(&gt;=&