Folding EitherT[Future, Throwable, A]

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Cannot figure out most idiomatic way to kinda fold EitherT[Future, Throwable, A] to Future[A], where left side of Either will be represented as failed Future.

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0
AudioBubble On

Is a simple straight-forward fold not good?

 foo.fold(Future.failed, Future.successful).flatten
0
Stefano Bonetti On

You could use fold and throw whatever Throwable you find on the left side

val foo: EitherT[Future, Throwable, A] = ???

import cats.instances.future._

foo.fold(throw _, identity)