[plt-scheme] How to apply a multi-argument function to each element of a list

From: Synx (plt at synx.us.to)
Date: Thu Mar 4 03:10:30 EST 2010

Matthias Felleisen wrote:

> (define (encrypt n m)
>   (local ((define (encrypt-message msg) ... msg ... n ... m ...))
>     encrypt-message))

I'm fairly sure "local" isn't required in most cases. The "define"
syntax itself has an implied "local" section, thus:

(define (encrypt n m)
  (define (encrypt-message msg) ...)

You still can't mix defines and statements without defines, but I'm
pretty sure you don't need to include the "local" syntax unless you're
doing something weird.


(define (encrypt n m)
  (λ (msg)

Posted on the users mailing list.