4.8 Meta-Call Predicates
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  • Documentation
    • Reference manual
      • Built-in Predicates
        • Meta-Call Predicates
          • call/1
          • call/2
          • apply/2
          • not/1
          • once/1
          • ignore/1
          • call_with_depth_limit/3
          • call_with_inference_limit/3
          • setup_call_cleanup/3
          • setup_call_catcher_cleanup/4
          • call_cleanup/2
          • call_cleanup/3
          • undo/1
    • Packages
Availability:built-in
Source[deprecated]not(:Goal)
True if Goal cannot be proven. Retained for compatibility only. New code should use \+/1.