0260デフォルトの名無しさん
2019/03/03(日) 23:36:56.32ID:TlyfzziMHaskellはそう言うのパターンマッチがあるんで楽。
main = mapM_ f [1..4]
f 1 = putStrLn "x = 1"
f 2 = putStrLn "x = 2"
f 3 = putStrLn "x = 3"
f x = putStrLn "x = others number"
output:
x = 1
x = 2
x = 3
x = others number