What does the constraint (Stream s Identity t) mean in the following type declaration? parse :: (Stream s Identity t)
I want to parse a file like this: 开发者_C百科66:3 3:4 329:2 101:3 495:4 55:5 268:5 267:2 242:4 262:1
I have a problem for writing parsec rules for one language I have next language definition (problematic part)
Text Text.Parsec Text.Parsec.ByteString Text.Parsec.ByteString.Lazy Text.Parsec.Char Text.Parsec.Combinator
I am going through Write Yourself a Scheme in Haskell.Its a great tutorial, but I\'ve run into a wall with one of the parsing exercises:
Please note, subsequently to posting this question I managed to derive a solution myself. See the end of this question for my final answer.
I\'m new to Haskell and I am trying to parse expressions. I found out about Parsec and I also found some articles but I don\'t seem to understand what I have to do. My problem is that I want to give a
I\'m trying to get data from 开发者_开发知识库a webpage that serves a XML file periodically with stock market quotes (sample data). The structure of the XML is very simple, and is something like this:
When I try to parsemany p, I don\'t receive the \'expecting p\' message: > parse (many (char \'.\') >> eof) \"\" \"a\"
Using Parsec 3.1, it is possible to parse several types of inputs: [Char] with Text.Parsec.String Data.ByteString with Text.Parsec.ByteString
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