> 42
42
> 9483982057324895732489057324890573248957324890573248957324890573248907590832475
9483982057324895732489057324890573248957324890573248957324890573248907590832475
> 2342342342342341351235/123421341235125161
2342342342342341351235/123421341235125161
> #\A
#\A
> #\0
#\0
> 0
0
> -a
-a: undefined;
 cannot reference an identifier before its definition
> -3
-3
> -
#<procedure:->
> --
--: undefined;
 cannot reference an identifier before its definition
> (define -- -)
> --
#<procedure:->
> (1 + 2)
application: not a procedure;
 expected a procedure that can be applied to arguments
  given: 1
> #\'
#\'
> (define (g x) (- (g (+ x 1)) 1))
> (g 0)
[image] Interactions disabled; out of memory

> (define (h) (+ 2 3))
> (define hh (+ 2 3))
> hh
5
> h
#<procedure:h>
> (h)
5
> ((h))
application: not a procedure;
 expected a procedure that can be applied to arguments
  given: 5
  arguments...: [none]
> (+ (/ 4 0) xxx)
/: division by zero
> 1.342367836489274893275897324859732458732485732458932475892347827389273892738945728947327895
1.3423678364892748
> 1342367836489274893275897324859732458732485732458932475892347827389273892738945728947327895/1000000000000000
268473567297854978655179464971946491746497146491786495178469565477854778547789145789465579/200000000000000
> (max 1 2 5 6)
6
> (max)
max: arity mismatch;
 the expected number of arguments does not match the given number
  expected: at least 1
  given: 0
> (expt 2 10)
1024
> +
#<procedure:+>
> procedure?
#<procedure:procedure?>
> (number? 2)
#t
> (number? a)
a: undefined;
 cannot reference an identifier before its definition
> (number? a)
#t
> (symbol? symbol?)
#f
> (symbol? 'symbol?)
#t
> (procedure? procedure?)
#t
> (define a 2)
> (define (g x) (- (g (+ x 1) 1)))
> (g 0)
> (define (g x) (g (+ x 1)))
> (g 0)
user break