Method is_constant

be/src/exprs/scalar-expr.h:175–175

Returns true if this expr should be treated as a constant expression.

  /// Returns true if this expr should be treated as a constant expression.
  bool is_constant() const { return is_constant_; }

  /// Returns the number of SlotRef nodes in the expr tree. If 'slot_ids' is non-null,
  /// add the slot ids to it. Overridden by SlotRef.