In RxJS you can make multiple REST calls, wait that all of them are completed and get a single result.
You can use forkJoin and combineLatest RxJS operators to achieve this result.
So, what’s the difference?
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Fabio Biondi @fabiobiondi
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Angular & RxJS Tips #5: Multiple Http calls - combineLatest vs forkJoin
Publish Date: Jul 5 '22
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What's difference with Promise.all ?