F.2 Library predicates
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      • Summary
        • Library predicates
          • library(aggregate)
          • library(ansi_term)
          • library(apply)
          • library(assoc)
          • library(broadcast)
          • library(charsio)
          • library(check)
          • library(clpb)
          • library(clpfd)
          • library(clpqr)
          • library(csv)
          • library(dcgbasics)
          • library(dcghighorder)
          • library(debug)
          • library(dicts)
          • library(error)
          • library(explain)
          • library(help)
          • library(iostream)
          • library(summaries.d/iostream/tex)
          • library(lists)
          • library(main)
          • library(occurs)
          • library(option)
          • library(optparse)
          • library(ordsets)
          • library(persistency)
          • library(predicate_options)
          • library(prologpack)
          • library(prologxref)
          • library(pairs)
          • library(pio)
          • library(random)
          • library(readutil)
          • library(record)
          • library(registry)
          • library(settings)
          • library(simplex)
          • library(ugraphs)
          • library(url)
          • library(www_browser)
          • library(solution_sequences)
          • library(thread_pool)
          • library(varnumbers)
          • library(yall)
    • Packages

F.2.16 library(error)

current_type/3True when Type is a currently defined type and Var satisfies Type of the body term Body succeeds.
domain_error/2The argument is of the proper type, but has a value that is outside the supported values.
existence_error/2Term is of the correct type and correct domain, but there is no existing (external) resource that is represented by it.
existence_error/3Term is of the correct type and correct domain, but there is no existing (external) resource that is represented by it in the provided set.
has_type/2True if Term satisfies Type.
instantiation_error/1An argument is under-instantiated.
is_of_type/2True if Term satisfies Type.
must_be/2True if Term satisfies the type constraints for Type.
permission_error/3It is not allowed to perform Action on the object Term that is of the given Type.
representation_error/1A representation error indicates a limitation of the implementation.
resource_error/1A goal cannot be completed due to lack of resources.
syntax_error/1A text has invalid syntax.
type_error/2Tell the user that Term is not of the expected Type.
uninstantiation_error/1An argument is over-instantiated.