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Observable<List<X>> to Observable<X> that emits each element in List<X>

See original GitHub issue

Is there a utility operator for converting from Observable<List<X>> to an Observable<X> that emits each element in List<X>?

Otherwise, are there any obvious optimizations for something like:

getChannels().switchMap(channels -> Observable.from(channels))

flatMap() could be used as well, depending.

Issue Analytics

State:
Created 9 years ago
Reactions:9
Comments:11 (6 by maintainers)

Top GitHub Comments

48reactions

andreathackercommented, Apr 12, 2017

For anyone else who comes across this thread, I think that flatMapIterable will do the trick. You should be able to call .listObservable.flatMapIterable(items -> items) and get a stream of the items from the list that way.

11reactions

zsxwingcommented, Jan 21, 2015

You can also use flatMapIterable like getChannels().flatMapIterable(l -> l).

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