Thank you! I will try that. Sorry for the delayed response. Got caught up
in another project.
On Sat, Jan 4, 2014 at 9:40 AM, Gustavo Massaccesi wrote:
> There are more complex closures, that share an external variable. For
> example:
> ;-
> #lang racket
> (define-values (up! down!)
> (let
There are more complex closures, that share an external variable. For example:
;-
#lang racket
(define-values (up! down!)
(let ()
(define counter 0)
(define (up!) (set! counter (add1 counter)) counter)
(define (down!) (set! counter (sub1 counter)) counter)
(values up! down!)))
What kind of inspection?
If it's for security purposes, you're better off running the procedures
in a sandbox (see the `racket/sandbox' module). You can even control the
amount of time something is allowed to run. Also, `serial-lambda' might
be something you could use, if the sender and receiv
Thank you for your kind responses. Your solutions are good ones but
unfortunately don't fit my purpose. Imagine a mobile code scenario where
you have no control of the definition of a closure. What I want to do is to
be able to print the body of any incoming closure that arrives in a
message. So if
Yes, you can do it with a struct with the property prop:procedure.
#lang racket
(require rackunit)
(struct my-proc (proc str)
#:property prop:procedure (struct-field-index proc))
(define f
(my-proc (lambda (x) (+ x 1))
"(lambda (x) (+ x 1))"))
(check-true (procedure? f))
(chec
Not sure that's what you really want, but you can use a simple macro to get
both the procedure and the corresponding string when defining the procedure:
#lang racket
;; Macro:
(define-syntax-rule (lambda+string args body ...)
(values
(lambda args body ...)
(~a '(lambda args body ...
Hello,
is there any way to transform a function's body to a string such as
"(lambda(x)...)"?
Thanks
Alegria
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