[Haskell-cafe] Re: Embedding newlines into a string?

[Neil Mitchell]

Hi

>  >    > mapM_ putStrLn (hanoi 2) -- outputs each move
>  > in a new line
>  >    > putStrLn (unlines (hanoi 2)) -- same as
>  > previous line

putStr (unlines (hanoi 2))

is what you want. Unlines puts a trailing new line at the end of every
line, including the final one. putStrLn puts an additional trailing
new line, so you get 2 at the end.

mapM_ putStrLn == putStr . unlines

Thanks

Neil