{"id":"deque-never-empty-during-eviction","text":"In the recent-calls solution, the `while self.q[0] < t - 3000` loop cannot raise IndexError because the just-appended `t` always satisfies the window boundary, preventing full drain","truth_value":"IN","source":"entries/2026/06/06/number-of-recent-calls-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"deque-never-empty-during-eviction","truth_value":"IN","reason":"premise"}]}}