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