define class methods by using a class within a class's singleton class like the code : Singletons « Design Patterns « Ruby

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Ruby » Design Patterns » Singletons

define class methods by using a class within a class's singleton class like the code





class Area

  class << self

    def rect( length, width, units="inches" )

      area = length*width

      printf( "The area of this rectangle is %.2f %s.", area, units )

      sprintf( "%.2f", area )

    end

  end

end



Area.rect(10, 10) # The area of this rectangle is 100.00 inches.=> "100.00"

Related examples in the same category

1.	Define a singleton method, one that is tied to a single object
2.	Singleton a class
3.	Classes as Singletons
4.	Modules as Singletons
5.	include Singleton

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