[cells-devel] Lots of instances, callback when particular instance changes

[Frank Goenninger]

Am 06.05.2007 um 00:04 schrieb Josip Gracin:

> Frank Goenninger wrote:
>> You do - yet there is another approach I adopted from Kenny:
>
> Thanks!  Now I have to spend some time examining stuff you've  
> written that I've never heard of before (such as with- 
> integrity...). :-)

> Also, there doesn't seem to be anything named "defobserver" in the  
> latest asdf-installable cells.  Has this become def-c-output perhaps?

You definitely should get the CVS sources from common-lisp.net! See  
there for how to access the CVS repository... -

def-c-output (sort of) became defobserver ... Also, there's a big  
chance you won't find with-integrity in the asdf-installable sources...

>
> Anyway, I was kind of trying to avoid sub-classing because I have  
> lots of switches.  I'll have to re-think that decision.

Yeah, it took some time for me too to take that decision. And it  
still is very situation/use case-dependent, so there's no "always go  
that route" rule available, IMO. Still, I don't mind heaving a few  
hundred classes defined in my Lisp programs (using AllegroCL 8 here).

Kenny is surprisingly quiet ... Maybe he's busy taking orders for his  
new AlgebraOne software ;-)

Cheers
     Frank