22 Apr
2003
22 Apr
'03
9:21 p.m.
Hallo!
As singleton objects I often use Objects directly derived from Object
Object MySingleton MySingleton proc doJob {} { puts "This is my job" }
MySingleton doJob
This is not singleton pattern but is same cases you do not need some Java, C++ solution. One disadvantage is that you can not use method inheritance.
By the way. The presented solution from G. Neumann. That is to overwrite "new" method that returns singleton object is the standard way to implements singleton in Smalltalk (the singleton instance is saved in class variable Default). That is XOTcl! "new" is just method not special operator and can be overwritten.
Artur Trzewik