s a list of diffs between two arrays</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-recover_input"><a href="#val-recover_input" class="anchor"></a><code><span><span class="keyword">val</span> recover_input : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-item">item</a> array</span> * <span><a href="#type-item">item</a> array</span></span></code></div><div class="spec-doc"><p>Recover the original input passed to <a href="#val-get