SWI-Prolog -- del_dict/4

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Predicate del_dict/4

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Documentation
- Reference manual
  - SWI-Prolog extensions
    - Dicts: structures with named arguments
      - Predicates for managing dicts
        
        is_dict/1
        
        is_dict/2
        
        get_dict/3
        
        get_dict/5
        
        dict_create/3
        
        dict_pairs/3
        
        put_dict/3
        
        put_dict/4
        
        del_dict/4
        
        :</2
        
        select_dict/3
        
        >:</2
        
        Destructive assignment in dicts
- Packages

Availability:built-in

del_dict(+Key, +DictIn, ?Value, -DictOut)

True when Key-Value is in DictIn and DictOut contains all associations of DictIn except for Key.