Mega Code Archive

 

Categories / Ruby / Class

 

Class methods give you the mechanism to properly implement the object counter

class Square   def initialize     if defined?(@@number_of_squares)       @@number_of_squares += 1     else       @@number_of_squares = 1     end   end   def Square.count     @@number_of_squares   end end a = Square.new puts Square.count b = Square.new puts Square.count c = Square.new puts Square.count