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[Rijk J. C. van Haaften]

You probably want to do something like this:

main =
     do {
         contents <- input "twoboxes.dat"
         return (control (parser contents))
     }

At 11:53 25-02-02 -0300, Juan M. Duran wrote:
>Hi, I'm writting a small parser in Haskell and, when it is all done, I get
>the following problem: Type Binding.
>The thing is, I have 3 main functions:
>1) Read the file, its type is: [Char] ->IO [Char] (see InputOutput.hs)
>2) Parse a string (using words and readDec), its type is: Integral a =>
>[Char] -> [a] (see Parse.hs)
>3) Parse a list of integer, its type is: [Float] -> [[Float]]
>(Functions.hs)
>
>Now the problem is that I cannot run the first function, then use its
>results as an input of the second function and, finally, its results as
>the input of the third function.
>
>How can I fix this without modifing all my functions because they,
>independly, works fine.
>
>Juan