><div class="spec value anchored" id="val-upd_env"><a href="#val-upd_env" class="anchor"></a><code><span><span class="keyword">val</span> upd_env : <span><a href="Syntax/index.html#type-lval">Syntax.lval</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="Value/index.html#type-t">Value.t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-env">env</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-env">env</a></span></code></div><div class="spec-doc"><p><code>upd_env 