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A comment on The Power of Prolog. Parent comment

Re:The Power of Prolog by Avshalom on Wednesday April 08, 2020 @08:35PM (#22818691)
I can't remember exactly where it is mentioned (it is somewhere) but in SWI-Prolog you need to put

  :- use_module(library(clpfd)).
at the top of your file (or just use_module(library(clpfd)). at the console)
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Re:The Power of Prolog by falsissime on Thursday April 09, 2020 @05:40PM (#22827494)
Or

    :- use_module(library(clpz)).
for its successor which runs with SICStus and Scryer.
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