On Tue, Jan 03, 2006 at 10:28:54PM +0100, Udo Stenzel wrote:
Daniel Carrera wrote:
print_list [] = do putStr ""
This looks as if you're confused. The keyword "do" is completely redundant. "do" does not mean "please ignore all rules and allow side effects", it rather means "please build a new action by sequencing what follows". So "do" with only one action after it is useless (and a sign of confusion).
Perhaps you are right, but this can also be a sign of version-control awareness, and I know Daniel uses darcs. I often place a single command in a do-block, because I want future changes to touch as little lines as possible. Consider: f = putStrLn "b" and f = do putStrLn "b" If you'll later add more commands, you'll get something like: f = do x <- g putStrLn "b" putStrLn x which is much closer to the reduntant-do variant. Best regards Tomasz -- I am searching for programmers who are good at least in (Haskell || ML) && (Linux || FreeBSD || math) for work in Warsaw, Poland