I'm trying to learn debugging in J. It does seem to be much different from,
say, C++. Now I've got a specific question which I'd like to ask.
Suppose I have verb AA, which in its body calls verb BB, which in turn calls
verb CC. When I run AA, for some input data I'm getting exception, which shows
me a line in verb CC, say, line 5.
My verbs do have side effects (I use global variables). How can I debug the
problem in CC after getting the exception? "Debug" means that I want to see
inputs for verbs before and on the line 5, to figure out which data is
incorrect. I can't resume - repeat the line - the execution from the same point
within CC, and to run AA again, I have first to revert globals to their
original state. I feel this is approach foreign for J, but I'm not sure how I
should proceed with debugging in general here.
Can you suggest practical approaches here?
Alex
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