election details *PLEASE READ*

Alan Kay alan.kay at squeakland.org
Thu Mar 1 14:03:27 UTC 2007


How is the Thinglab rework going? What needs to be done to get it 
running? How about in 3.8?

Cheers,

Alan

-------------

At 11:32 PM 2/28/2007, Matthew Fulmer wrote:
>On Fri, Feb 23, 2007 at 10:35:35PM -0800, Andreas Raab wrote:
> > Early on I thought the same way (and this was why we started thinking
> > down that road when Nathanael interned with us). However, in practice it
> > seems like Traits are mostly being used as a thinly veiled version of MI
> > with all the same problems. You have correctly pointed out that Java
> > interfaces are "nothing but abstract virtual base classes in C++" -
> > which coincidentally, was the only way that MI ever worked in C++, which
> > itself has two dozen ways of doing MI wrong and exactly ONE to do it
> > right (abstract virtual base classes). Java choose a stand on that and
> > it worked (which is pretty impressive given that it was the first
> > language that used interface to that extent). Traits seem to reintroduce
> > a number of ways of using MI wrongly (at least that's the feeling that I
> > get when I look at the practical example) and that's why I prefer
> > interfaces.
>
>Forgive me, but I am not familiar with "All the problems
>Multiple Inheritance got wrong". I will be testing out how
>Multiple Inheritance works in Squeak, since I have made it my
>top priority to get ThingLab [1] working in a recent Squeak
>system. ThingLab adds multiple inheritance [2] and a constraint
>solver to Smalltalk, and both have at least a good theoretical
>reason to be there, but I cannot test the implementation yet,
>since such a change currently breaks squeak. Multiple
>Inheritance has at least a solid theory; I have not had much
>experience with an implementation.
>
>[1] http://wiki.squeak.org/squeak/607
>     Links to ThingLab papers and code.
>
>[2] http://www.2share.com/thinglab/ThingLab%20-%20Chapter%203.html
>     Chapter 3 of the ThingLab paper. Section 2 contains a
>     defense of ThingLab's multiple inheritance.
>
>--
>Matthew Fulmer -- http://mtfulmer.wordpress.com/
>Help improve Squeak Documentation: http://wiki.squeak.org/squeak/808




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