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< title > retractall/1< / title >
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< h2 > < code > < a class = "back" title = "Return to index" href = "../index.html#retractall1" > retractall/1< / a > < / code > < / h2 >
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< h4 > Description< / h4 >
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retractall(Head)
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Retracts all matching predicates from an object.
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< h4 > Template and modes< / h4 >
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retractall(+callable)
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< h4 > Errors< / h4 >
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< dt > Head is a variable:< / dt >
< dd > < code > instantiation_error< / code > < / dd >
< dt > Head is neither a variable nor a callable term:< / dt >
< dd > < code > type_error(callable, Head)< / code > < / dd >
< dt > The predicate indicator of Head is that of a private predicate:< / dt >
< dd > < code > permission_error(modify, private_predicate, Head)< / code > < / dd >
< dt > The predicate indicator of Head is that of a protected predicate:< / dt >
< dd > < code > permission_error(modify, protected_predicate, Head)< / code > < / dd >
< dt > The predicate indicator of Head is that of a static predicate:< / dt >
< dd > < code > permission_error(modify, static_predicate, Head)< / code > < / dd >
< dt > The predicate indicator of Head is not declared:< / dt >
< dd > < code > existence_error(predicate_declaration, Head)< / code > < / dd >
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< h4 > Examples< / h4 >
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< dt > To retract all matching predicate definitions in < a class = "glossary" title = "Go to glossary definition" href = "../../glossary.html#this" > this< / a > :< / dt >
< dd > < code > retractall(Head)< / code > < / dd >
< dt > To retract all matching public or protected predicate definitions in < a class = "glossary" title = "Go to glossary definition" href = "../../glossary.html#self" > self< / a > :< / dt >
< dd > < code > ::retractall(Head)< / code > < / dd >
< dt > To retract all matching public predicate definitions in an object:< / dt >
< dd > < code > Object::retractall(Head)< / code > < / dd >
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< strong > < a href = "retract1.html" > Previous< / a > | < a href = "bagof3.html" > Next< / a > | < a href = "../index.html" > Table of Contents< / a > | < a href = "../../bibliography.html" > Bibliography< / a > | < a href = "../../glossary.html" > Glossary< / a > < / strong >
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Last updated on: August 6, 2002
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