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Revision 2737, 0.5 KB
(checked in by pmoura, 3 years ago)
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Avoid false singleton warnings with named anonymous variables on recent version of SWI-Prolog.
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Property svn:eol-style set to
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Property svn:keywords set to
Author Date Id Revision
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| 1 | |
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| 2 | :- object(set(_Type), |
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| 3 | extends(set)). |
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| 4 | |
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| 5 | :- info([ |
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| 6 | version is 1.01, |
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| 7 | author is 'Paulo Moura', |
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| 8 | date is 2006/4/25, |
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| 9 | comment is 'Set predicates with elements constrained to a single type.']). |
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| 10 | |
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| 11 | valid(Set) :- |
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| 12 | nonvar(Set), |
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| 13 | parameter(1, Type), |
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| 14 | \+ \+ valid(Set, Type). |
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| 15 | |
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| 16 | valid([], _) :- |
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| 17 | !. |
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| 18 | valid([Element], Type) :- |
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| 19 | !, |
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| 20 | Type::valid(Element). |
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| 21 | valid([Element1, Element2| Set], Type) :- |
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| 22 | Element1 @< Element2, |
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| 23 | Type::valid(Element1), |
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| 24 | Type::valid(Element2), |
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| 25 | valid([Element2| Set], Type). |
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| 26 | |
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| 27 | :- end_object. |
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