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