Re: [Chicken-users] need help with hygienic macros

[Peter Bex]

On Sun, May 12, 2013 at 07:36:32PM +0200, Jörg F. Wittenberger wrote:
> Hm, wait... you're not talking about parameterize as in srfi-39 do you?

Yes, I was.

> a) Way too much overhead.
> b) no way: atop of the usually straight-forward evaluation it's sometimes
>   subject to delay'ed evaluation... (see my other message to 
> chicken-hackers
>   about how to make a single `(delay <expr>)` being evaluated as often
>   as you want just to discard all but the fastest result (nevertheless
>   still incurring all the effort to evaluate those results, which never
>   take an effect besides the side-effects; and yes... we are talking
>   about the same code here.

I didn't quite understand that example.  I guess I'm not thinking too
clearly today!

In any case, you can also cobble your own parameterize-like construction
by communicating through globals, for example.  Or you can just use
fluid-let.

Or, if it's possible at all, try to focus your efforts on making
parameterize behave as expected, and to make it work faster.

Cheers,
Peter
-- 
http://www.more-magic.net