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< title > Logtalk built-in predicate: set_logtalk_flag/2< / title >
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< a href = "../../index.html" > contents< / a > > < a href = "../index.html" > reference manual< / a > > < a href = "../index.html#builtins" > built-in predicates< / a >
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< h2 > < code > set_logtalk_flag/2< / code > < / h2 >
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< h4 > Description< / h4 >
< blockquote >
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< pre > set_logtalk_flag(Flag, Value)< / pre >
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< p >
Sets Logtalk flag values.
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< h4 > Template and modes< / h4 >
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< pre > set_logtalk_flag(+atom, +atom)< / pre >
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< / blockquote >
< h4 > Errors< / h4 >
< blockquote >
< dl >
< dt > Flag is a variable:< / dt >
< dd > < code > instantiation_error< / code > < / dd >
< dt > Value is a variable:< / dt >
< dd > < code > instantiation_error< / code > < / dd >
< dt > Flag is not an atom:< / dt >
< dd > < code > type_error(atom, Flag)< / code > < / dd >
< dt > Flag is neither a variable nor a valid flag:< / dt >
< dd > < code > domain_error(valid_flag, Flag)< / code > < / dd >
< dt > Value is not a valid value for flag Flag:< / dt >
< dd > < code > domain_error(valid_flag_value, Value)< / code > < / dd >
< dt > Flag is a read-only flag:< / dt >
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< dd > < code > permission_error(modify, read_only_flag, Flag)< / code > < / dd >
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< h4 > Examples< / h4 >
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< pre > | ?- set_logtalk_flag(xml, on).< / pre >
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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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