From: Ruby Newbee <rubynewbee@...>
Date: 2010-01-01T23:54:12+09:00
Subject: yield self if block_given?

class AngstyNamedPerson
	attr_reader :name

	@@hated_names = %w(Leroy Sparkles Thaddius)

	def name=(new_name)
		@name = new_name
		raise "I have probems with being named #{@name}." if
@@hated_names.include? new_name
	end

	def initialize(name)
		@name = name
	end

	def transactionally(&block)
		old_name = @name
		begin
			yield self if block_given?
		rescue
			@name = old_name
		end
	end
end

mr_pibbles = AngstyNamedPerson.new('Mr. Pibbles')


--
In the code above, what's "yied self if block_given?" in the function
of transactionally?
I can't understand for the "self".

Please help with it.
Thanks.