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< title > Logtalk built-in method: predicate_property/2< / title >
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< a href = "../../index.html" > contents< / a > > < a href = "../index.html" > reference manual< / a > > < a href = "../index.html#methods" > built-in methods< / a >
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< h2 > < code > predicate_property/2< / code > < / h2 >
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< h4 > Description< / h4 >
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< pre > predicate_property(Predicate, Property)< / pre >
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Enumerates, by backtracking, the properties of a visible predicate.
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< h4 > Template and modes< / h4 >
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< pre > predicate_property(+callable, ?predicate_property)< / pre >
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< h4 > Errors< / h4 >
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< dl >
< dt > Predicate is a variable:< / dt >
< dd > < code > instantiation_error< / code > < / dd >
< dt > Predicate is neither a variable nor a callable term:< / dt >
< dd > < code > type_error(callable, Predicate)< / code > < / dd >
< dt > Property is neither a variable nor a valid predicate property:< / dt >
< dd > < code > domain_error(predicate_property, Property)< / code > < / dd >
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< h4 > Examples< / h4 >
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< dt > To enumerate, by backtracking, the properties of a predicate visible in < a class = "glossary" title = "Go to glossary definition" href = "../../glossary.html#this" > this< / a > :< / dt >
< dd > < code > predicate_property(foo(_), Property)< / code > < / dd >
< dt > To enumerate, by backtracking, the properties of a public or protected predicate visible in < a class = "glossary" title = "Go to glossary definition" href = "../../glossary.html#self" > self< / a > :< / dt >
< dd > < code > ::predicate_property(foo(_), Property)< / code > < / dd >
< dt > To enumerate, by backtracking, the properties of a public predicate visible in an object:< / dt >
< dd > < code > Object::predicate_property(foo(_), Property)< / code > < / dd >
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Copyright © < a href = "mailto:pmoura@logtalk.org" > Paulo Moura< / a > — < a href = "http://www.logtalk.org" > Logtalk.org< / a >
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