[Newbies] How to access a Squeak class
Warakorn Paphrawat
warakorn_paphrawat at yahoo.com
Tue Jan 16 13:41:50 UTC 2007
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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