prolog_stack:prolog_stack_frame_property/2

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Predicate prolog_stack_frame_property/2

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swipl
- library

prolog_stack_frame_property(+Frame, ?Property) is nondet

True when Property is a property of Frame. Frame is an element of a stack-trace as produced by get_prolog_backtrace/2. Defined properties are:

level(Level)
predicate(PI)
goal(Term)
location(File:Line): This property is only available if Frame executes a Prolog clause, the program counter is known and the clause layout can be retrieved.