Enumerateaser

gistfile1.scala

// Import ALL the things
import scalaz._, Scalaz._, iteratee._, Iteratee._, effect._

// An enumerator based on an iterator
val input = enumIterator[String, IO](Iterator("a", "bb", "ccc", "dddd"))

// An enumeratee which maps strings to their length
def strLen[F[_]:Monad] = EnumerateeT.map[String, Int, F](_.length)

// An iteratee which prints to System.out
val output = putStrTo[Int](System.out) &= (input mapE strLen)

// Prints '1234'
output.run.unsafePerformIO()