Flattening in RxJS: interview exercises

Flattening in RxJS: 5 test-checked interview exercises (Only the latest: switchMap, All at once: mergeMap), each beside a worked example, with tests as you go. Free.

1. Only the latest: switchMap
2. All at once: mergeMap
3. One after another: concatMap
4. Ignore while busy: exhaustMap
5. Parallel, but not unlimited

Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.

More RxJS topics

• Creating observables
• Transforming
• Filtering
• Timing
• Combining
• Errors & completion
• Subjects & sharing

All RxJS exercises · Other languages and frameworks