9 Dec
2007
9 Dec
'07
4:04 p.m.
hi I have a function parseInt... which needs an error guard for when the input is not an Int. parseInt :: ParserparseInt [] = []parseInt xs = let (digits, rest) = span isDigit (removeSpace xs) in [(EInt (read digits), removeSpace rest)] Also... I have a function that does this... parseBinaryOp "+" "(5 + 2) if" gives...[(Int 5, Int 2, "if")]so, op is '+' or "&&". I am unsure of how to begin... parseBinaryOp :: String -> String -> [(Expr, Expr, String)]parseBinaryOp op str Thankyou Ryan _________________________________________________________________ Get free emoticon packs and customisation from Windows Live. http://www.pimpmylive.co.uk