Re: [Haskell-cafe] Parse Error ( Parsec )

On 1/11/2014 2:42 PM, Hilco Wijbenga wrote:

On 11 January 2014 11:12, mukesh tiwari wrote:

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table = [ [ Prefix ( Not <$ string "~" ) ] , [ Infix ( And <$ string "&" ) AssocLeft ] , [ Infix ( Or <$ string "|" ) AssocLeft ] , [ Infix ( Imp <$ string "=>" ) AssocLeft , Infix ( Red <$ string "<=" ) AssocLeft , Infix ( Eqi <$ string "<=>" ) AssocLeft Have you tried changing the order here? I would expect the "<=>" check to have to come before the "<=" check? I haven't played with this so I'm just guessing.

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Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe This would have the same problem, in the other direction. Parsing "a<=b" would get to "<", start matching against "<=>", then find "b" instead of ">" and fail again.