Luca de Alfaro skrev:
> And where else can you find a debugger that can execute code
 > (or give you the impression it does) backwards?
> This is invaluable when trying to find things like where an 
 > exception is thrown: you simply run the code until it exits
 > throwing the exception, then you back off a few steps until
 > you find what is throwing the exception and why.


FWIW, Omnis has had this since the early 90's.

http://www.omnis.net/products/studio/index.html?detail=whyomnis

(I think that's the successor of the Omnis 5 and 7 that I used
back then.)

I can certainly vouch for the amazing utility of such debugging.
It is priceless! I didn't know Ocaml could do that.

BR,
Ulf W