A.2 library(apply): Apply predicates on a list
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Availability::- use_module(library(apply)).(can be autoloaded)
Sourcescanl(:Goal, +List, +V0, -Values)
scanl(:Goal, +List1, +List2, +V0, -Values)
scanl(:Goal, +List1, +List2, +List3, +V0, -Values)
scanl(:Goal, +List1, +List2, +List3, +List4, +V0, -Values)
Left scan of list. The scanl family of higher order list operations is defined by: 
scanl(P, [X11,...,X1n], ..., [Xm1,...,Xmn], V0,
      [V0,V1,...,Vn]) :-
      P(X11, ..., Xm1, V0, V1),
      ...
      P(X1n, ..., Xmn, V', Vn).

ClioPatria (version V3.1.1-21-gb8003bb)