How can I combine a tuple of values with a tuple of functions?

Question

I have scalaZ available.

I have an (A, B) and a (A => C, B => D), I'd like to get a (C, D) in a simple and readable way.

I feel like there's something I can do with applicatives but I can't find the right methods.

Answer 1

Edit

Didn't get it at first, that the OP has tuple of functions. In such case as suggested in comments this should work:

val in = ("1", 2)

val fnT = ((s: String) => s.toInt, (i: Int) => i.toString)

val out = (in.bimap[Int, String] _).tupled(fnT)

Old

If you have two functions and want to apply them on tuple, you should be able to do:

import scalaz._
import Scalaz._

val in = ("1", 2)

val sToi = (s: String) => s.toInt
val iTos = (i: Int) => i.toString


val out = sToi <-: in :-> iTos
// or
val out1 = in.bimap(sToi, iTos)
// or
val out2 = (sToi *** iTos)(in)

Answer 2

Arrows? Something like:

(f *** g)(a, b)

http://eed3si9n.com/learning-scalaz/Arrow.html