SICP exercise 2.17
From Drewiki
Problem
Define a procedure last-pair that returns the list that contains only the last element of a given (nonempty) list:
Output:
(34)
Solution
We need a procedure that cdrs down the list:
Note that it's safe to cdr the list before checking that the cdr is empty, because the constraint on the input list is that it's non-empty.
Test:
Output:
(34)

