Question
What are the core differences between observables and promises?
Answers
Promises vs Observables :
Promises:

returns a single value.
not cancellable.

Observables:

works with multiple values over time.
cancellable.
supports map, filter, reduce and similar operators.
proposed feature for ES 2016.
use Reactive Extensions (RxJS).
an array whose items arrive asynchronously over time.   Your Comment




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