-var">'b</span>)</span> <a href="../../argument-1-M/index.html#type-t">M.t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="../../argument-1-M/index.html#type-t">M.t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> <a href="../../argument-1-M/index.html#type-t">M.t</a></span></code></dt><dt class="spec value" id="val-(&gt;&gt;=)"><a href="#val-(&gt;&gt;=)" class="anchor"></a><code><span class="keyword">val</span> (&gt;&gt;=) : <span><span class="type-