{"id":"digit-extraction-modular-idiom","text":"The `n % 10` / `n //= 10` loop for digit extraction is a recurring idiom across dozens of solutions in this repo (e.g., `self-dividing-numbers`, `alternating-digit-sum`, `add-digits`, `subtract-the-product-and-sum-of-digits-of-an-integer`)","truth_value":"IN","source":"entries/2026/06/06/count-the-digits-that-divide-a-number-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"digit-extraction-modular-idiom","truth_value":"IN","reason":"premise"}]}}