e-var">'okk</span> )</span> <span class="arrow">&#45;&gt;</span></span> <span><span>( <span class="type-var">'okk</span>, <span class="type-var">'err</span> )</span> <a href="../index.html#type-t">t</a></span></span></code></div></div><div class="odoc-spec"><div class="spec value" id="val-(&gt;&gt;=)" class="anchored"><a href="#val-(&gt;&gt;=)" class="anchor"></a><code><span><span class="keyword">val</span> (&gt;&gt;=) : <span><span><span>( <span class="type-var">'ok</span>, <span class="type-var">'err</spa