static and class variable?

rubyonrails-talk
1

In rails, What is the difference between static and class variable? Is it the same or different?

Thanks, Ratnavel

2

It's different

class variables are variables of the class Their value is shared by all objects

Class Something   @@class_variable = 0

  def do_something     @@class_variable +=1   end end

foo = Something.new foo.do_something bar = Something.new bar.do_something

After that code @@class_variable will be 2 It behaves like a static class variable in C++

There are no static variables on a function level like in C++ as far as I know You can use normal class attributes or class variables instead (depending if you want them per object or not)

Here is some longer discussion on the topic: http://groups.google.com/group/ruby-talk-google/browse_thread/thread/30c79cd4b9fb5c8