Phil,
Are there any tools for beginning programmers that give traces of Haskell programs? I want something like the following. Given the defintion
sum [] = 0 sum (x:xs) = x + sum xs
typing
sum [1,2,3]
should yield this trace
sum [1,2,3] 1 + sum [2,3] 1 + 2 + sum [3] 1 + 2 + 3 + sum [] 1 + 2 + 3 + 0 1 + 2 + 3 1 + 5 6
I know there are advanced tools like Hat, but (unless I'm missing something) they don't yield anything as naive as the above, and it's naive users I'm trying to help here. -- P
There is a Hat tool called hat-anim that can do this kind of thing. It was developed by Tom Davie as a student project. It is not part of the current "official release" of Hat but is included in the CVS version. Tom is now a PhD student at Canterbury ([EMAIL PROTECTED]), supervised by Olaf Chitil ([EMAIL PROTECTED]).
Regards Colin R
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