Next: Exceptions Debug, Previous: Breakpoint Conditions, Up: Debug Intro [Contents][Index]
It is possible, and sometimes useful, to consult a file whilst in the middle of program execution. Predicates that have been successfully executed and are subsequently redefined by a consult and are later reactivated by backtracking, will not notice the change of their definitions. In other words, it is as if every predicate, when called, creates a copy of its definition for backtracking purposes.