{"id":"inorder-state-via-instance-vars","text":"BST inorder traversal solutions in this repo use instance variables (e.g., `self.prev`, `self.min_diff`) for running state across recursive calls rather than nonlocal closures or return-value threading.","truth_value":"IN","source":"entries/2026/06/06/minimum-absolute-difference-in-bst-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"inorder-state-via-instance-vars","truth_value":"IN","reason":"premise"}]}}