It's hard to say exactly, but assuming you have your file new line
delimited and you have a function signature like
moveParser :: String -> YOUR_TYPE
you can try something like this:
main = do
handle <- openFile "test.txt"
contents <- hGetContents handle
processedLines <- return (fmap moveParser $ lines contents)
hClose handle
Does this help?
Dennis
On Sat, May 16, 2015 at 3:58 PM, Mike Houghton
Hi,
I’me writing a simple parser and can test it in GHCI
parseTest moveParser "(1,2)->(3,3)”
and I get what I expect i.e. Move {from = Location 1 2, to = Location 3 3}
I now have a text file (test.txt) with lots of (1,2)->(3,3) (3,6)->(3,9) etc etc and I really can’t see how I get the contents of the text file into the parser!!
I have main = do handle <- openFile "test.txt" ReadMode contents <- hGetContents handle !! what goes here!!! - how do I invoke moveParser with contents ??
Thanks
Mike
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