Combine convert Just to AnyPublisher

Question

How to convert Just<[Int]> to AnyPublisher<[Int], Error>. When I use eraseToAnyPublisher() the type is AnyPublisher<[Int], Never> which is not the same as AnyPublisher<[Int], Error>

For example I have a simple function which I want to mock temporary

func getAllIds() -> AnyPublisher<[Int], Error> {
    return Just<[Int]>([]).eraseToAnyPublisher()
}

Any ideas?

score 45 · Accepted Answer · edited Mar 06 '20 at 00:41

45

Use .setFailureType. The situation you are in is exactly what it is for:

Just([Int]())
    .setFailureType(to: Error.self)
    .eraseToAnyPublisher()

edited Mar 06 '20 at 00:41

rob mayoff

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answered Mar 05 '20 at 17:32

Dmitriy Lupych

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And this is easier than Rx? .just([]) – Michael Long Oct 21 '20 at 15:33
@MichaelLong it's a little bit different) Love your articles on Medium! – Dmitriy Lupych Oct 21 '20 at 15:56
I just [sic] ran into this again and had to search it again, only to find my original question... :( – Michael Long Aug 25 '21 at 14:42

Combine convert Just to AnyPublisher

1 Answers1