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I am looking at this ruby code and they make reference to:
@current_user
and
self.current_user
what is the difference?
http://code.google.com/p/openplaques/source/browse/trunk/www/lib/authenticated_system.rb
@current_useris an instance variable.self.current_usercalls the method on line 10 that returns that instance variable, first populating it if it is currently nil.