wiedld commented on code in PR #9685:
URL: https://github.com/apache/arrow-datafusion/pull/9685#discussion_r1532509914
##########
datafusion/optimizer/src/common_subexpr_eliminate.rs:
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@@ -532,18 +545,18 @@ impl ExprMask {
/// Go through an expression tree and generate identifier.
///
/// An identifier contains information of the expression itself and its
sub-expression.
-/// This visitor implementation use a stack `visit_stack` to track traversal,
which
+/// This visitor implementation use a stack `f_down()` to track traversal,
which
Review Comment:
nice catch.
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