You can do it using a simple macro
(define-syntax f
(syntax-rules ()
((_ a n) (set! a n))))
(define p 1)
(f p 3)
p
> 3
(define r 5)
(f r 30)
r
> 30
Hari
----- Original Message -----
From: "Joe Snikeris" <[email protected]>
To: [email protected]
Sent: Sunday, August 8, 2010 9:59:41 PM GMT -05:00 US/Canada Eastern
Subject: [racket] Modifying bindings in parent environment
Hi all,
Is there a way for a procedure to modify bindings in it's parent
environment? I suppose the technique would be similar to passing a
C-style pointer to the procedure.
For example:
(define p 1)
(f p 3)
p
> 3
Define f...
Thanks in advance,
Joe
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