[EMAIL PROTECTED] writes: > Hi folk > > Is there a way to follow the "execution" of a Haskell program? What I mean here > is a way to see which function definition is being used at any moment, and how > the execution control moves around a script file. > > If this is a preposterous question, just tell me nicely and I will go away! > > Oh, and if this has been discussed before, please tell me where and I will chase > it up. > > Thanks!
It is slightly preposterous; since Haskell programs are referentially transparent, simply looking at the order in which the program is run is confusing -- there are no side effects, so the compiler might generate code whose order of execution is far from the expected. Nevertheless, there are excellent debugging tools for Haskell: * Hat <http://www.cs.york.ac.uk/fp/hat/> * Hood <http://www.haskell.org/hood> * GHood <http://www.cs.ukc.ac.uk/people/staff/cr3/toolbox/haskell/> Although they don't work like, say GDB, I find them more intuitive, since they in the spirit of functional programming focus on /what/ a function calculates instead of /how/. There's a more exhaustive list at <http://www.haskell.org/libraries/#tracing>. Knock yourself out! --- Mikael Brockman [EMAIL PROTECTED] _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
