Try not to lose your marbles with RXJS
summary
A clear, practical walkthrough of core RxJS: defines observables and observers, demonstrates that next/error/complete actually close or continue streams, contrasts hot versus cold subscriptions with real behavior, and shows operators that transform and filter (examples: debounceTime for type‑ahead and autosave, map and pluck for state). Error handling via catch and cleanup patterns are shown—manual unsubscribe, using take(3), or the async pipe—to avoid memory leaks.
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