On 25/09/2007, Andrew Coppin
Type signature is
show_system :: [[Double]] -> String
It takes a matrix representing a system of equations, and pretty prints it. Unfortunately, doing complex formatting like that is... well, complex. The input is quite simple (it's a bunch of numbers), the output is quite simple (it's a neatly formatted string), but the process in the middle is... a mess. I'd like to find a more readable way of doing stuff like this. It's not just this specific function; any general hints would be good. ;-)
In this instance I would suggest: (1) Text.Printf (2) Pull out some of those things into separate functions with where/let clauses. If it's a matrix you should probably have something like
showMatrix = concatMap showRow
Since you'll be applying the same procedures to each line of digits. Cheers, D.