[aspectl-announce] AspectL 0.6 released

[Pascal Costanza]

Hi,

I have just released AspectL 0.6 on its website at 
http://www.common-lisp.net/project/aspectl/

The most notable improvement is that I have successfully ported AspectL 
to a number of Common Lisp implementations beyond LispWorks. It now 
runs on the following implementations:

- Allegro Common Lisp (with minor restrictions)
- CMU CL
- LispWorks
- OpenMCL (but not special generic functions)
- SBCL

Apart from some internal changes, porting AspectL to those other 
platforms has required one important design change. In AspectL 0.5, 
special generic function had to be defined like this:

(defgeneric some-function (some-parameters)
   (:generic-function-class special-generic-function))

Now, they have to be defined like that:

(define-special-function some-function (some-parameters)
   (:definer some-function*))

You have to provide two names: The first name must be used for calling 
a special function whereas the second name (the "definer") must be used 
for defining methods. This avoids some deep problems I have faced when 
trying to sneak in additional information in the generic function 
invocation protocol of the CLOS MOP. In all other respects, 
define-special-function acts like defgeneric.

For further details, see the release notes.


Pascal

--
Tyler: "How's that working out for you?"
Jack: "Great."
Tyler: "Keep it up, then."