#
#   http://q...content-available-to-author-only...e.jp/1370659386
#
 
module Foo
    def initialize
        @original_update = self.method(:update)
        def self.update
            @original_update.call
            puts "!!! Extended Implementation !!!"
        end
    end
end
 
class Bar
    def update
        puts "Bar : update"
    end
end
 
class Baz < Bar
    def update
        super
        puts "Baz : update"
    end
end
 
 
#
#   Test
#
def test msg
    puts "\n--------------------------------\n#{msg}\n--------------------------------"
    puts "-- Bar.update"
    f = Bar.new
    f.update
 
    puts "-- Baz.update"
    f = Baz.new
    f.update
 
end
 
test "Normal"
 
class Baz
    include Foo
end
 
test "Baz include Foo"
 
class Bar
    include Foo
end
 
test "Bar include Foo"
 

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