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Fixes #401. Add fj.test.Gen.sequence(Validation<E, Gen<A>>). #402

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Merged
merged 1 commit into from
Jul 21, 2020
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Fixes #401. Add fj.test.Gen.sequence(Validation<E, Gen<A>>). #402

merged 1 commit into from
Jul 21, 2020

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drewctaylor
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Fixes #401. Add fj.test.Gen.sequence(Validation<E, Gen>).

It should transform a validation for a generator into a generator of validations: if the given validation is a failure, the generator produces that failure value; if the given validation is a success, the generator produces success values.

public static <E, A> Gen<Validation<E, A>> sequence(final Validation<E, Gen<A>> gv) {
    return gen(i -> r -> gv.map(g -> g.gen(i, r)));
}

@tonymorris tonymorris merged commit d89c845 into functionaljava:series/4.x Jul 21, 2020
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Cheers mate.

@drewctaylor drewctaylor deleted the functionaljava-401 branch July 24, 2020 20:43
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@drewctaylor @tonymorris @drewctaylorgtri