CMPT 383 Question and answers verified to pass 2025/2026

CMPT 383 Question and answers
verified to pass 2025/2026
Racket History - correct answer ✔- Lisp->scheme->racket

- Real-eval-print loop

- Prefix notation



string - correct answer ✔"a"



symbol - correct answer ✔'a



quoted list - correct answer ✔'(a b 1 (2 3 4))

- needs quote or it will evaluate



side effects - correct answer ✔what it prints to the screen, reads from files, setting a global variable
etc.



if statement - correct answer ✔(if <test><true><false>)



and statement - correct answer ✔(and <test1><test2>...)

- if all tests are true returns true, else false



or statement - correct answer ✔(or <test1><test2>...)

- if one test is true, returns true, else false



cond statement - correct answer ✔(cond [test1 result1]

, [test 2 result2]

[else result_else])



lambda function - correct answer ✔(lambda (arg1 arg2 ... argn) body-expr)



local binding - correct answer ✔(let ([v1 val1]

[v2 val2]

...

[vn valn] body)

- v1, v2, vn can be used in body only



pairs - correct answer ✔- lists are constructed from pairs

'(3 . (4 . (5 . ( ))))

(2 . 3) is dotted pair notation



vectors - correct answer ✔#(v0 v1 v2 ... vn-1)

(vector-ref vec i): returns element at index location i



quasi quoting - correct answer ✔- put backwards quote

- values with commas before are unquoted

- @ sign splices values of a list (gets rid of brackets around a list)



apply - correct answer ✔(apply f list-of-args)

- evaluates f using the items