A.36.3.2 Reflective access to options
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  • Documentation
    • Reference manual
      • The SWI-Prolog library
        • library(predicate_options): Declare option-processing of predicates
          • Improving on the current situation
            • Reflective access to options
              • predicate_options/3
              • assert_predicate_options/4
              • current_predicate_option/3
              • check_predicate_option/3
              • current_option_arg/2
              • current_predicate_options/3
              • check_predicate_options/0
              • derive_predicate_options/0
              • retractall_predicate_options/0
              • derived_predicate_options/3
              • derived_predicate_options/1
    • Packages
Availability::- use_module(library(predicate_options)).(can be autoloaded)
Source[nondet]current_predicate_options(:PI, ?Arg, ?Options)
True when Options is the current active option declaration for PI on Arg. See predicate_options/3 for the argument descriptions. If PI is ground and refers to an undefined predicate, the autoloader is used to obtain a definition of the predicate.