5.4.1 Functions on dicts
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Availability:built-in
Source.(+Dict, +Function, -Result)
This predicate is called to evaluate ./2 terms found in the arguments of a goal. This predicate evaluates the field extraction described above, raising an exception if Function is an atom (key) and Dict does not contain the requested key. If Function is a compound term, it checks for the predefined functions on dicts described in section 5.4.1.2 or executes a user defined function as described in section 5.4.1.1.