></span> <a href="#type-t">t</a></span></code></div><div class="spec-doc"><p>fetch the canonical representative of the given <code>AbstractValue.t</code></p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-canon_fst"><a href="#val-canon_fst" class="anchor"></a><code><span><span class="keyword">val</span> canon_fst : <span><a href="#type-astate">astate</a> <span class="arrow">&#45;&gt;</span></span> <span><span>(<a href="#type-needs_canon">needs_canon</a> * <span class="type-var">'