Logtalk 2.30.7 files.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1973 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
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@@ -9,6 +9,16 @@
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:- public(ctg_pred/0).
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ctg_pred.
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ctg_pred :-
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{generate_list(20, List)},
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length(List, _).
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length(List, Length) :-
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length(List, 0, Length).
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length([], Length, Length).
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length([_| Tail], Acc, Length) :-
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Acc2 is Acc + 1,
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length(Tail, Acc2, Length).
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:- end_category.
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