/span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-addr"><a href="#val-addr" class="anchor"></a><code><span><span class="keyword">val</span> addr : <span><span><span>(<span class="type-var">'a</span>, <span class="type-var">'b</span>)</span> <a href="#type-structured">structured</a></span> <span class="arrow">&#45;&gt;</span></span> <span><span><span>(<span class="type-var">'a</span>, <span class="type-var">'b</span>)</span> <a href="#type-structured">stru