What's the primary difference between the switchMap and mergeMap operators?

  • switchMap and mergeMap are identical and can be used interchangeably.
  • switchMap and mergeMap are used for completely different purposes and cannot be compared.
  • switchMap cancels the previous inner observable when a new one arrives, while mergeMap concurrently processes all inner observables.
  • switchMap processes all inner observables concurrently, while mergeMap cancels the previous inner observable when a new one arrives.
The primary difference is that switchMap cancels the previous inner observable when a new one arrives. In contrast, mergeMap concurrently processes all inner observables it receives. This behavior makes switchMap useful for scenarios where you want to ensure only the latest inner observable result is considered, while mergeMap retains all results from concurrently executing inner observables.
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