Welcome to DrRacket, version 8.4 [cs].
Language: racket, with debugging; memory limit: 128 MB.
> 1
1
> 1.3
1.3
> 1/3
1/3
> #f
#f
> #t
#t
> abc
. . abc: undefined;
 cannot reference an identifier before its definition
> 'abc
'abc
> (list 'a 'b 'c)
'(a b c)
> "abc"
"abc"
> (symbol->string "abc")
. . symbol->string: contract violation
  expected: symbol?
  given: "abc"
> (symbol->string 'abc)
"abc"
> (+ 1 2 3)
6
> '(a b c d)
'(a b c d)
> '(+ 1 2 3)
'(+ 1 2 3)
> (eval '(+ 1 2 3))
6
> (cons 1 2)
'(1 . 2)
> (car (cons 1 2))
1
> (cdr (cons 1 2))
2
> (car '(+ 1 2 3))
'+
> (cdr '(+ 1 2 3))
'(1 2 3)
> (cons 1 (cons 2 (cons 3 '())))
'(1 2 3)
> '(1 . (2 . (3 . ())))
'(1 2 3)
> (if (> 3 2) '(1 2) (3 4))
'(1 2)
> (cons 1 (cons 2 (cons 3 4)))
'(1 2 3 . 4)
> (length (cons 1 (cons 2 (cons 3 4))))
. . length: contract violation
  expected: list?
  given: '(1 2 3 . 4)
>