miguel-vila

import Data.IORef

readAndPrint :: IORef Int -> IO ()
readAndPrint ioRef = do
	n <- readIORef ioRef
	print $ "ioRef = " ++ show n

main = do 
	ioRef <- newIORef 3
	readAndPrint ioRef -- "ioRef 3"

miguel-vila

import scalaz._
import Scalaz._

case class Cosa(str: String, f: Float, n: Int)

import scalaz.Order.orderBy

val orderByStr = orderBy { c: Cosa => c.str }
val orderByF = orderBy { c: Cosa => c.f }
val orderByN = orderBy { c: Cosa => c.n }

miguel-vila

module Main where

main =	ioA where
	ioA = putStrLn "Hola"
	ioB = putStrLn "Chao!"

miguel-vila

scala> import scalaz.std.list.listInstance
import scalaz.std.list.listInstance

scala> import scalaz.Traverse
import scalaz.Traverse

scala> import scalaz.ValidationNel
import scalaz.ValidationNel

scala> import scalaz.Validation