Welcome to DrRacket, version 8.4 [cs].
Language: racket, with debugging; memory limit: 128 MB.
> 1
1
> 1.4
1.4
> 1/2
1/2
> #t
#t
> #f
#f
> true
#t
> false
#f
> "acesta este un string"
"acesta este un string"
> 'acestaesteunliteral
'acestaesteunliteral
> 'acestaesteun4443
'acestaesteun4443
> abc
. . abc: undefined;
 cannot reference an identifier before its definition
> abc
5
> 'abc        ; apostroful face ca expresia care urmează să nu fie evaluată
'abc
> (cons a b)
. . a: undefined;
 cannot reference an identifier before its definition
> (cons 'a 'b)
'(a . b)
> (car (cons 'a 'b))
'a
> (cdr (cons 'a 'b))
'b
> (first (cons 'a 'b))
. . first: contract violation
  expected: (and/c list? (not/c empty?))
  given: '(a . b)
> (list 1 2 3 4)
'(1 2 3 4)
> (car (list 1 2 3 4))
1
> (cdr (list 1 2 3 4))
'(2 3 4)
> (cdr (cdr (cdr (cdr (list 1 2 3 4)))))
'()
> (cddddr (list 1 2 3 4))
'()
> (cons 1 (cons 2 '()))
'(1 2)
> (cons 1 (cons 2 (cons 3 '())))
'(1 2 3)
> (cons 1 (cons 2 (cons 3 4)))
'(1 2 3 . 4)
> '(1 2 3 4)
'(1 2 3 4)
> (1 2 3 4)
. . application: not a procedure;
 expected a procedure that can be applied to arguments
  given: 1
> (+ 1 2 3 4)
10
> '(+ 1 2 3 4)
'(+ 1 2 3 4)
> (car '(+ 1 2 3 4))
'+
> ((car '(+ 1 2 3 4)) 5 6)      ; aici + este încă o expresia apostrofată
. . application: not a procedure;
 expected a procedure that can be applied to arguments
  given: '+
> ((eval (car '(+ 1 2 3 4))) 5 6)
11
> '(+ 1 2 (a b c) (1 . 5) 4)
'(+ 1 2 (a b c) (1 . 5) 4)
> (cons 'a (list 1 2 3 4))
'(a 1 2 3 4)
> (append '(1 2 3) '(4 5 6))
'(1 2 3 4 5 6)
> '()
'()
> (null? '())
#t
> (length (append '(1 2 3) '(4 5 6)))
6
> (member 1 '(2 3 4 5))
#f
> (member 3 '(2 3 4 5))
'(3 4 5)
> (if (> 2 3) 'este 'nu-este)
'nu-este
> (if #f 'este 'nu-este)
'nu-este
> (if (member 1 '(1 2 3)) 'este 'nu-este)
'este
> (if 0 'este 'nu-este)
'este
> (if 0 'este)
. if: missing an "else" expression in: (if 0 (quote este))
>