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