- Haskell-Cafe - Haskell.org

documentation for Hugs-GHC extension libraries
by Dean Herington 13 Oct '00

13 Oct '00

I can't seem to find an easily printable (i.e., not HTML-in-many-pieces) version of the documentation for the Hugs-GHC extension libraries. Have I overlooked it? Thanks. Dean Herington heringto(a)cs.unc.edu

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Haskell Problem
by Graeme Turner 11 Oct '00

11 Oct '00

Hello, I am e-mailing you to see if you could offer me a bit of assistance. I have chosen to use Haskell in a minor assignment at my University, Heriot Watt in Edinburgh. The basic aim is to read in a file of data, sort it and then display it. I have managed to get a sort to function properly but I am having trouble with reading in the data from the file. I have managed to use the hGetContents and hGetLine methods of the IO library to read the data in but when it is read in, it is stored as an IO String type. I would like to convert the input from the file into one large string so I can process it before sorting it. After reading the whole file into a variable, how do I then convert that IO String to a String? I would be very grateful if you could offer me some assistance in this matter. Thanks Graeme Turner

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Doh!! Still don't quite understand
by Graeme Turner 10 Oct '00

10 Oct '00

Hi, I e-mailed earlier about the IO String input but am still unable to get anything to work Thanks for the e-mails back but I still haven't got a grasp of what to do.Here is a more detailed explanation as I may have been rather vague last time! I have a file of the following format :- Surname , Forename , Age , Height e.g. <String>, <String>, <Int> , <Int> I have a tuple called Person which is defined as (String,String,Int,Int) as you would expect. What I want to do is to create a function which will 1 take a line from the file 2 create a Person tuple from the read information I have defined functions to perform an insertion sort given a tuple of the above specification. Thanks for your time in explaining this to me Graeme Turner

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