A.2 library(apply): Apply predicates on a list
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Availability::- use_module(library(apply)).(can be autoloaded)
Sourcefoldl(:Goal, +List, +V0, -V)
foldl(:Goal, +List1, +List2, +V0, -V)
foldl(:Goal, +List1, +List2, +List3, +V0, -V)
foldl(:Goal, +List1, +List2, +List3, +List4, +V0, -V)
Fold a list, using arguments of the list as left argument. The foldl family of predicates is defined by: 
foldl(P, [X11,...,X1n], ..., [Xm1,...,Xmn], V0, Vn) :-
      P(X11, ..., Xm1, V0, V1),
      ...
      P(X1n, ..., Xmn, V', Vn).
ClioPatria (version V3.1.1-21-gb8003bb)