freeCodeCamp/guide/spanish/haskell/hello-world/index.md

title	localeTitle
Hello World Program	Programa Hello World

El programa más simple de Hello World en Haskell

main :: IO () 
 main = do 
    putStrLn "Hello World" 

Hola mundo usando la composición de funciones

hello :: String 
 hello = "Hello World" 
 
 printer :: String -> IO () 
 printer = putStrLn . show 
 
 main :: IO () 
 main = printer hello