[Newbies] How to access a Squeak class

[Bert Freudenberg]

What makes you think it does not return a class object? It does.

But note that you have to use a symbol (#Object) not a String  
('Object') when you use #at:. Of course. '#Object' does not make any  
sense. If you use #classNamed:, both a String and a Symbol will work.

- Bert -

On Jan 16, 2007, at 14:41 , Warakorn Paphrawat wrote:

> This doesn't work either, because again (Smalltalk at: aClassName)  
> is returning just a ByteString but not (e.g.)     Object class     
> or   (e.g.) ClassBuilder class .
>
> Lets assume in the calling method is written:
> returnSuperClass: '#Object'.
> Note: the Argument must be an instance of String.
>
> returnSuperClass: aClassName
> |aSuperClass|
>
> aSuperClass := (Smalltalk at: aClassName) superclass.
>
> ^ aSuperClass.
>
> Nope, this does'nt work.
>
> Herbert König <herbertkoenig at gmx.net> wrote: Hello Warakorn,
>
> try:
> Smalltalk at: #MonthMorph inspect
>
> Cheers
>
> Herbert mailto:herbertkoenig at gmx.net
> WP> Hi !
> WP> Actually it is probably a very simple Squeak concept which I  
> haven't understood, yet.
>
> WP> Serving as an simple example, I would like to write a method,
> WP> which accepts a Class as argument and which return the Superclass
> WP> of that Class.
> WP> The problem is that the argument must be an instance of
> WP> String, that means  the argument aClassName  contains an actual
> WP> class name (e.g. aClassName = 'Object'. or aClassName =
> WP> 'ClassBuilder'), however, this is just a String object.
>
> WP> returnSuperClass: aClassName
> WP> |aSuperClass|
>
> WP> aSuperClass := aClassName superclass.
>
> WP> ^ aSuperClass.
>
> WP> Obviously this method won't work, because aClassName is just
> WP> an instance of ByteString. And instances of ByteString cannot
> WP> understand the message superclass.
>
> WP> So I need the actual class object  which the content of the  
> String aClassName represents.
> WP> How can I achieve ? Or how can I make this method correct ?
> WP> (it is imperative, that the argument aClassName is a String).
>
> WP> Thanks for you help in advance.
>
>
> WP> Best Regards
> WP> Warakorn
>
>
>
> WP> Have a burning question? Go to Yahoo! Answers and get answers  
> from real people who know.
>
>
>
>
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