{"id":"lookup-string-as-digit-map","text":"`hex_chars = \"0123456789abcdef\"` uses string indexing as a lightweight digit-to-character mapping, avoiding dictionaries or conditional chains.","truth_value":"IN","source":"entries/2026/06/06/convert-a-number-to-hexadecimal-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"lookup-string-as-digit-map","truth_value":"IN","reason":"premise"}]}}