What are the various categories of pre-defined function interfaces?

1.	What are the various categories of pre-defined function interfaces?
Answer» Function: To transform ARGUMENTS in returnable VALUE. Predicate: To PERFORM a test and return a BOOLEAN value. Consumer: Accept arguments but do not return any values. Supplier: Do not accept any arguments but return a value. Operator: Perform a reduction type operation that ACCEPTS the same input types.

Answer»

Function: To transform ARGUMENTS in returnable VALUE.

Predicate: To PERFORM a test and return a BOOLEAN value.

Consumer: Accept arguments but do not return any values.

Supplier: Do not accept any arguments but return a value.

Operator: Perform a reduction type operation that ACCEPTS the same input types.

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