9 Aug
2007
9 Aug
'07
8:59 p.m.
From the Smalltalk FAQ [1]: Class instance variables
are
similar to class variables, except that they are created for
eachsubclass of the defining class. When a class declares a
class instance variable, a new variable is created for each
subclass of that class. Each subclass then has its own
instance of the variable and retains its own value for the
variable, but each subclass has a variable with the same
name. Only class methods of a class and its subclasses can
refer to class instance variables; instance methods cannot.
Cheers,
Lukas
Or to put it simply, classes are objects too, and all objects have instance
variables.
Ramon Leon
http://onsmalltalk.com