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F[A] => F[Boolean]
instead of A => F[Boolean]
tho
List[A]
and would like to build a T[A]
where there's a Traversable[T]
CanBuildFrom
, semantically, yet I would rather avoid doing it procedurally
Traverse[T]
of course
No implicit view available from (Int, Int) => scala.collection.GenTraversableOnce[B]
. How can I create GenTraversableOnce? The only way is to create a new such instance? for instance new GenTraversableOnce { ... }
mapN
and many other things
dropWhileF(_.attemptT.isLeft)