Re: Re: confirmation on :default-initargs not working?

Frode Vatvedt Fjeld wrote:
> Kenny Tilton <ktilton@xxxxxxxxxx> writes:
> 
>  > No one has responded/reacted to this from yesterday (or the night
>  > beore?):
> 
> Again, I haven't examined Corman Lisp's sources, but I don't think
> :default-initargs is implemented in Closette, so I wouldn't be
> surprised if it simply isn't implemented yet in Corman Lisp either.

OK. I think you are right.

To the vendor:

The Case for :default-initargs
-------------------------------
Wow. Just checked the source of the CliniSys system, which includes a 
homebrewed GUI--looks like over two hundred occurrences of 
"default-initargs". Don't know how many slots were addressed by each 
:d-i. Why so many?

Sometimes when I subclass I want to tailor it by supplying a specific 
form for some slot defined in a superclass (direct or indirect). With 
Corman Lisp as it stands, I have to restate the slot so I can supply the 
tailoring form as the initform of the slot. Not good. And now if I want 
to modify that slot definition...etc etc.

I get into this a lot because Cells promote object reuse. I can get
custom behavior out of a relatively generic class by supplying
custom rules for a core set of generic slots. I /could/ bypass the :d-i
mechanism and make functions such as make-instance-of-oddball in which 
custom initargs were supplied to make-instance, but then it's not CLOS 
anymore.

-- 

  kenny tilton
  clinisys, inc
  http://www.tilton-technology.com/
  ---------------------------------------------------------------
"Cells let us walk, talk, think, make love and realize
  the bath water is cold." -- Lorraine Lee Cudmore



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