sub_filter_exp filter sub</code> restricts the domain of <code>sub</code> to the identifiers satisfying <code>filter(id, sub(id))</code>.</p></div></div><div class="odoc-spec"><div class="spec value" id="val-sub_range_partition" class="anchored"><a href="#val-sub_range_partition" class="anchor"></a><code><span><span class="keyword">val</span> sub_range_partition : <span><span>( <span><a href="../../IR/Exp/index.html#type-t">IR.Exp.t</a> <span class="arrow">&#45;&gt;</span></span> bool )</span> <span class="