A.13 library(dcg/high_order): High order grammar operations
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Availability::- use_module(library(dcg/high_order)).
Source[det]foreach(:Generator, :Element)//
[det]foreach(:Generator, :Element, :Sep)//
Generate a list from the solutions of Generator. This predicate collects all solutions of Generator, applies Element for each solution and Sep between each pair of solutions. For example: 
?- phrase(foreach(between(1,5,X), number(X), ", "), L).
L = "1, 2, 3, 4, 5".