{"id":"hashmap-get-returns-negative-one","text":"MyHashMap.get returns integer -1 for absent keys (LeetCode convention), not None or KeyError.","truth_value":"IN","source":"entries/2026/06/06/design-hashmap-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"hashmap-get-returns-negative-one","truth_value":"IN","reason":"premise"}]}}