scalaz doens't have its own list implementation. Likely you just need to import the list typeclass instances with import scalaz.std.list._
and the traverse syntax with import scalaz.syntax.traverse._
Scalaz: how do I use `traverseS` on regular scala List?
문제
If I have a plain scala List[A]
(i.e. scala.collection.immutable.List
) and I have some state monad State[S,B]
. I'd like to use Scalaz's specialized traverseS
ala:
val stuff: scala.collection.immutable.List[Int] = List(1,2,3)
val state: State[S,A]
stuff.traverseS(i => modify { ... })
What do I need to import to convert scala.collection.immutable.List
to Scalaz's List
? I couldn't find searching through GitHub and I wasn't able to get it working with trying to import carte blanche. Perhaps I'm missing something obvious.
Thanks for your help.
해결책
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