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Message from discussion Namespaces of class slot names and accessors
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Scott McKay  
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 More options Apr 25 2004, 8:29 am
Newsgroups: comp.lang.lisp
From: "Scott McKay" <scott.mc...@comcast.net>
Date: Sun, 25 Apr 2004 12:29:11 GMT
Local: Sun, Apr 25 2004 8:29 am
Subject: Re: Namespaces of class slot names and accessors
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"Paolo Amoroso" <amor...@mclink.it> wrote in message

news:878ygk9tnw.fsf@plato.moon.paoloamoroso.it...

> To which namespace do class slot names belong?  And slot accessors?

> More specifically, I would like to know whether it is possible for
> different classes--in the same package--to have slots with the same
> names, such as:

>   (defclass class1 ()
>     ((same-slot :initarg :same-slot)))

>   (defclass class2 ()
>     ((same-slot :initarg :same-slot)))

> or for different classes to have slots with the same accessor names:

>   (defclass class1 ()
>     ((class1-slot :initarg :class1-slot :accessor same-accessor)))

>   (defclass class2 ()
>     ((class2-slot :initarg :class2-slot :accessor same-accessor)))

'same-accessor' is just the name of a generic function for
the slot's accessor method, so this will work.  However,
even though there is no enforcement, I think that you
should be sure that 'same-accessor' implements the
same sort of semantics for each class.

FWIW, when I share accessor names between multiple
classes, I first define generic functions for those accessors.

As for slot names, well, they're just names of symbols.
After the Dylan experience, slot names as distinct from
accessors seem like a mistake to me now.


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