subseq/3

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Predicate subseq/3

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Availability::- use_module(library(lists)).(can be autoloaded)

Source

[nondet]subseq(+List, -SubList, -Complement)

[nondet]subseq(-List, +SubList, +Complement)

Is true when SubList contains a subset of the elements of List in the same order and Complement contains all elements of List not in SubList, also in the order they appear in List.

Compatibility: SICStus. The SWI-Prolog version raises an error for less instantiated modes as these do not terminate.