pop_prolog_flag/1

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Predicate pop_prolog_flag/1

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Availability:built-in

pop_prolog_flag(:Key)

Restore the state saved by the matching push_prolog_flag/2. If Key did not exist at the matching push, it is removed again. Raises existence_error(pushed_flag, Key) if no matching push exists on the current thread.

History

Introduced in 10.1.12 (👉786ec52) push_prolog_flag/2 and pop_prolog_flag/1