[Newbies] invoking a *class* method from a workspace

[subbukk]

On Tuesday 05 June 2007 1:21 am, Bert Freudenberg wrote:
> >  class (instance variable) - instance variable of the class
> > (treated as an
> > object and therefore visible only to its methods and methods in its
> > subclasses).
>
> I don't think that is correct - what do you mean by "treated as an
> object"? I may be repeating myself, but *everything* is "treated as
> an object", because it is.
In Smalltalk, classes are first order objects. I need to keep reminding myself 
about this :-) because in many imperative languages this is not true.

> Smalltalk allClasses select: [:ea | ea class instVarNames size > 0]
Thanks for this hint. This is what I needed:
Smalltalk allClasses select:  [ :c | c class instVarNames size > 0 ] 
thenCollect: [ :c | c -> c class instVarNames ].

I had dropped the 'class' method and instVarNames didn't work. No wonder.
28 classes out of 2043 define their own instance variables. Rare indeed!

Thanks a lot .. Subbu