(vector-set! vector integer value) -> #f
Destructively replaces the given index of vector with value.
Example:
>> (vector "a" "z" "c" "d") :: #("a" "z" "c" "d") >> (define a (vector "a" "z" "c" "d")) :: #f >> a :: #("a" "z" "c" "d") >> (vector-set! a 1 "b") :: #f >> a :: #("a" "b" "c" "d")