On Tue, 25 Jan 2005, Dmitri Pissarenko wrote: (snip)
I need to read the height and width, then "cut" them from the string, create an array (or finite map) of Int's (for this I need to know the height and width), and then recursively process the pixel values (i. e. put them into the array).
The simple way is probably to use functions like "lines" and "words" and "map read". You can then use pattern-matching and recursive functions to work your way through the file. For regular expressions you can use Text.Regex in GHC. However, for fancier parsing in GHC you can look at Text.ParserCombinators.Parsec, and I recall that there was also talk on this list of a nice regular expression library with syntax that goes inline right into your Haskell code in a Perl-like way, but I also can't immediately find any reference to that. -- Mark