[squeak-dev] Re: [Pharo-project] Multiple issues with class
definition
Marcus Denker
denker at acm.org
Fri Apr 10 12:11:45 UTC 2009
On 10.04.2009, at 05:34, Igor Stasenko wrote:
> Another funny thing that i found, that you can actually do:
>
> | string |
> string := 'Blabla'.
> Object subclass: string
> instanceVariableNames: ''
> classVariableNames: ''
> poolDictionaries: ''
> category: 'Whatever'.
>
> Smalltalk at: string " returns a class you just defined."
>
Yes, reflectively generating classes is what the browser does. And in
addition,
it is useful for tests. Or in general meta-programming tricks of the
evil kind.
(e.g. eToys used it to create on-the-fly classes for it's prototype-
like object
model. In most of these cases, it is better to use anonymous
Behaviors, than you don't
see them in the browser at all).
> Its fun, but having no sense. What is interesting that OB can display
> this class (but not in a regular way, you can find it in smart groups
> pane, after searching for 'Blabla').
I think this is because the new class is not packaged. The old browser
shows
it in the class category 'Whatever', indistinguishable from a class
created with
the browser.
Marcus
--
Marcus Denker -- denker at acm.org
http://www.marcusdenker.de
More information about the Squeak-dev
mailing list
|