Re: [Chicken-users] Re: Style Guide

[Sunnan]

Jörg F. Wittenberger wrote:
> For pure chicken code this maybe correct.
>
> But some Scheme implementations happen to treat the former form as a
> global variable, which can be set! later on, while the latter is beeing
> compiled into a static binding and set! on it will raise an error.
Thanks for this clarification, I didn't know that.

However, since I only seldomly use set! on functions, I guess I'd prefer 
the latter form anyway.

One notable exception is this (disgusting?) idiom I invented for making 
generators without call/cc yield:

(define (fib)
 (let loop ((a 1) (b 1))
   (set! fib (lambda () (loop b (+ a b))))
   a))


;; maybe non-portable outside of current chicken semantics?