`make-pair-comparator``car-comparator``cdr-comparator`procedureThis procedure returns comparators whose functions behave as follows:

- The type test returns
`#t`if its argument is a pair, if the car satisfies the type test predicate of`car-comparator`, and the cdr satisfies the type test predicate of`cdr-comparator`. - The equality function returns
`#t`if the cars are equal according to`car-comparator`and the cdrs are equal according to`cdr-comparator`, and`#f`otherwise. - The ordering function first compares the cars of its pairs using the equality predicate of
`car-comparator`. If they are equal, then the ordering predicate of`car-comparator`is applied to the cars and its value is returned. Otherwise, the predicate compares the cdrs using the equality predicate of`cdr-comparator`. If they are not equal, then the ordering predicate of`cdr-comparator`is applied to the cdrs and its value is returned. - The hash function computes the hash values of the car and the cdr using the hash functions of
`car-comparator`and`cdr-comparator`respectively and then hashes them together in an implementation-defined way.

- The type test returns