Haskell中是否有像Pascal中的ReadLn这样的内置函数？
我想要这样的smth:
?> pascalReadLn :: IO (Int, Int, Int, Int)
1 2
3
4
(1,2,3,4)
?> pascalReadLn :: IO (Int, Int, Int, Int)
1 2 3 4
(1,2,3,4)
?> pascalReadLn :: IO (Int, Int, Int, Int)
1
2
3
4
(1,2,3,4)
...
etc.