I have an `Either<NonEmptyList<A>, B>` that I got ...

# arrow

[Chuong]

I have an Either<NonEmptyList<A>, B> that I got from a function that validates my inputs. I want to transform B into C. Doing so requires more validations, so I'll get a type of Either<NonEmptyList<A>, C> . The A s are typed errors that inherit from the same base class. I want to accumulate the errors. I believe that flatMap overwrites the first NonEmptyList<A> with the second one. Is bind and zipOrAccumulate the way to go?

[Alejandro Serrano.Mena]

yes, any accumulation function would have the result you expect

[phldavies]

When you have a B to transform, you won't have any existing As from that Either to merge or accumulate, so a flat map would suffice, no?