Angular Filter Observable. The values of source Observable for which predicate returns false will not be emitted by filter. Hopefully you now have a.
Hopefully you now have a. Import filter from rxjsoperators. The problem is we need to filter the observable based on a certain query and heres the solution for it.
It emits only those values which satisfies the condition and ignores the rest.
Only emit the value if it passes the filter function if predicateFn val observer. Map transforms each value of the source Observable using the passed formula. In AlbumService class create a method say getAllAlbums which will make HTTP GET request using Observable. We need to pass a predicate to filter as an argument and if predicate returns true only when filter will emit value.
