chickadee » scheme » equal?

Equal? recursively compares the contents of pairs, vectors, and strings, applying eqv? on other objects such as numbers and symbols. A rule of thumb is that objects are generally equal? if they print the same. Equal? may fail to terminate if its arguments are circular data structures.

(equal? 'a 'a)                          ===>  #t
(equal? '(a) '(a))                      ===>  #t
(equal? '(a (b) c)
        '(a (b) c))                     ===>  #t
(equal? "abc" "abc")                    ===>  #t
(equal? 2 2)                            ===>  #t
(equal? (make-vector 5 'a)
        (make-vector 5 'a))             ===>  #t
(equal? (lambda (x) x)
        (lambda (y) y))          ===>  unspecified