ndmitchell:
Hi
Eeek, a solution that does monadic maps and require's rank 2 types!
arr = [('a',1), ('b',2), ('c',3)] showAll = lines (map showItem arr) showItem (a,n) = a : " = " ++ show n main = putStr showAll
I've broken this up a bit more than usual - most people would probably just put showAll inside main, but this separates out the concepts. arr is the data, which you could construct with a zip if that really is all there is to it. showItem shows a single item, showAll shows them all, and main just prints out the information.
And this solution is Haskell 98, anything that uses printf is Haskell' only.
Thanks
Neil
$ hugs +98 __ __ __ __ ____ ___ _________________________________________ || || || || || || ||__ Hugs 98: Based on the Haskell 98 standard ||___|| ||__|| ||__|| __|| Copyright (c) 1994-2005 ||---|| ___|| World Wide Web: http://haskell.org/hugs || || Report bugs to: hugs-bugs@haskell.org || || Version: March 2005 _________________________________________ Haskell 98 mode: Restart with command line option -98 to enable extensions Type :? for help Hugs.Base> :l Text.Printf Text.Printf> printf "%d" (1::Int) :: String "1" Fix YHC! :-) -- Don