How to access a Squeak class

> Hello Warakorn,
>
> HK> try:
> HK> Smalltalk at: #MonthMorph inspect
>
> I got some more time, so here is a longer Version:
>
> Smalltalk is a Dictionary which afaik contains the names of all global
> symbols. So if you got a String, send it asSymbol and then look it up
> in that Dictionary.
>
> Actually Smalltalk is a SystemDictionary, if you are interested in
> exploring. The class comment has an example.
>
> Before writing or removing entries in this Dictionary, make sure you
> know what you're doing :-))
>
>
> So your code should be something like:
>
> returnSuperClass: aClassName
> |aSuperClass aClass|
>
> aClass :=  Smalltalk at: aClassName asSymbol.
> aSuperClass := aClass superclass.
>
> ^ aSuperClass.
>
> Cheers
>
> Herbert
>
>
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> 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 <[hidden email]> wrote: Hello Warakorn,
>
> try:
> Smalltalk at: #MonthMorph inspect
>
> Cheers
>
> Herbert mailto:[hidden email]
> 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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> The method Object>>#class does what you want. Since it is defined on
> Object you can send the message to any object, including a string.
>
> > returnSuperClass: aClassName
> > |aSuperClass|
> >
> > aSuperClass := (Smalltalk classNamed: aClassName) superclass.
> >
> > ^ aSuperClass.
> >
>