Arrays or lists? Lists is easier.
(transpose . map (map read . words) . lines) `liftM` readFile "file" should do it (untested code, though). On Fri, 12 Sep 2003, Gordon James Miller wrote: > Hello all, > > I believe I have a mental block on some issues related to IO and would > really appreciate some help on this. I have a text file that contains > two columns of numbers, basically X and Y values. I need a function (or > set of functions) that reads this file and returns two arrays, one of > the X values and one of the Y. A sample data file might look like. > > 10.0 20.0 > 20.0 40.0 > 30.0 60.0 > 40.0 80.0 > > Reading in this file should return two arrays [10.0, 20.0, 30.0, 40.0] > and [20.0, 40.0, 60.0, 80.0]. > > Thanks for any help on this, I just don't seem to get IO in Haskell > without reassignments. > > > > Gordon James Miller Promisemark, Inc. Senior Computer Scientist > [EMAIL PROTECTED] (571)330-9012 The box said "Requires Windows 95 > or better." So I installed LINUX > > _______________________________________________ > Haskell mailing list > [EMAIL PROTECTED] > http://www.haskell.org/mailman/listinfo/haskell > -- Hal Daume III | [EMAIL PROTECTED] "Arrest this man, he talks in maths." | www.isi.edu/~hdaume _______________________________________________ Haskell mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell
