{"id":"string-popcount-idiom","text":"`bin(n).count('1')` is used as the popcount method in `hamming-distance/solution.py` and is likely the standard popcount idiom across the repo (shared with `number-of-1-bits`, `counting-bits`, `minimum-bit-flips-to-convert-number`).","truth_value":"IN","source":"entries/2026/06/06/hamming-distance-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"string-popcount-idiom","truth_value":"IN","reason":"premise"}]}}