[Newbies] Best way to implement two-dimensional array

John Almberg jalmberg at identry.com
Tue Sep 4 19:19:34 UTC 2007

Whoa... that worked, but the implications are a bit hard to digest...

So MyClass is an object in my Smalltalk image, and it can have  
variables that I can set interactively, and the values contained  
therein are now part of the class...

I keep reading that classes are objects, but this is the first time  
I've seen something that makes me realize that they are fundamentally  
different than objects in other languages. I guess because they are  
'live', in some sense, in the Smalltalk environment. That is, not  
just source code, but an instantiated object.

Talk about paradigm whiplash... I'm going to have to think about  
this, a bit :-)


-- John

> Type "MyClass", select it, press Cmd-i (or Alt-i). You get an  
> inspector on a class - which of course is the instance of another  
> class, as everything is an object (and hence an instance of a  
> class) in Smalltalk. Anyway, you should see a reference to the  
> superclass, a dictionary of all the methods, the list of instance  
> variables and subclasses etc. Class variables are simply held in a  
> Dictionary in the "classPool" instance variable of that class. So  
> by inspecting that and drilling down into your class var you can  
> modify it.
> A simpler way to get at the contents of your class var is just  
> selecting its name in a browser showing any method of your class,  
> and press Cmd-i there. That works because in the browser, code is  
> evaluated in the context of the selected class.
> - Bert -
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