Module: Singleton

Defined in:
lib/opal/singleton.rb

Overview

–

          DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                  Version 2, December 2004

          DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. You just DO WHAT THE FUCK YOU WANT TO.

++

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/opal/singleton.rb', line 20

def self.included(klass)
	super

	class << klass
		def new
			raise ArgumentError, "you can't call #new on a Singleton" if @instance

			@instance = super
		end

		undef_method :allocate

		def instance
			@instance ||= new()
		end
	end
end

Instance Method Details

#clone ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/opal/singleton.rb', line 12

def clone
	raise TypeError, "can't clone instance of singleton #{self.class}"
end

#dup ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/opal/singleton.rb', line 16

def dup
	raise TypeError, "can't dup instance of singleton #{self.class}"
end