Single.onErrorResumeNext

[TastyPi]

Observable has a onErrorResumeNext to continue with a new Observable if onError is called. I'd like something similar for Single, so:

Single<T> onErrorResumeNext(Single<? extends T> resumeSingle)

Single<T> onErrorResumeNext(Func1<? super Throwable, ? extends Single<? extends T>> resumeFunction)

Single already has onErrorReturn, it makes sense to have onErrorResumeNext as well.

[adennie]

related: https://groups.google.com/forum/#!topic/rxjava/vCMxB6CY88w

[artem-zinnatullin]

I'll work on this.

[artem-zinnatullin]

@akarnokd I can do it in 2 ways:

1. Convert Single to Observable and lift already implemented and tested OperatorOnErrorResumeNextViaFunction and OperatorOnErrorResumeNextViaObservable.
2. Re-implement these operators for Single, it may give some performance boost, but adds two classes to the library.

I guess you'll vote for 2nd way, but I think it worth to ask :)

[akarnokd]

Frankly, I'm not satisfied with 1.x Single and how it tries to reuse Observable components; it leads to wrappers and un-wrappers and so on even for the trivial operators. If they were retryWhen then I'd say convert back and forth like I do with 2.x. So yes, I vote for option 2.

[artem-zinnatullin]

ok, no problem :)