the monopoly of classes
jan ziak
ziakjan at host.sk
Thu May 22 23:14:15 UTC 2003
On Thu, 22 May 2003 14:29:13 -0700 (PDT), Brian T Rice wrote
> On Thu, 22 May 2003, jan ziak wrote:
>
> > in smalltalk:
> > 1. object must be an instance of a class
> > 2. class is an object
>
> Let me restate it:
>
> 1. Every object must be an instance of a class. Classes describe
> their instances.
> 2. Classes themselves are objects, therefore they also have their
> own classes in Smalltalk.
>
more precissely:
1. every object includes a field which contains a reference to its "class
object"
2. object Class includes a reference to its "class object" also
my question is: do all objects really need to contain that field ?
> > i do not see any logic behind this. if you do then a would
> > like to know about it.
>
> Read a Free Smalltalk Book and see:
>
> http://www.iam.unibe.ch/~ducasse/WebPages/FreeBooks.html
>
> --
> Brian T. Rice
> LOGOS Research and Development
> http://tunes.org/~water/
More information about the Squeak-dev
mailing list
|