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- To: CommonLoops.pa@Xerox.COM
- Subject: allowable specializers
- From: firstname.lastname@example.org
- Date: Mon, 20 Mar 89 14:43:35 PST
- Posted-date: Mon, 20 Mar 89 14:43:35 PST
- Redistributed: CommonLoops.pa
- Sender: email@example.com
Re: Gregor's note on allowable specializers:
The only permissible parameter
specializers are classes and lists of the form (EQL <object>).
I presume that "classes" here encompasses types defined by DEFSTRUCT
(without the :type option)?
The way I read "Integrating Types and Classes" in chapter 1, I would expect
(portably) to be able to use the name of a defstruct type as a specializer
in the same places where I could use the name of a class introduced
with defclass. Is that correct? Is there any way to use defstruct types
as specializers in PCL (without defining a new kind of generic function)?