yield duplications

yield.rb

class Before
  class << self
    def method1
      puts 'first duplication'
      puts 'i am uniq for method 1'
      puts 'second duplication'
    end
    def method2
      puts 'first duplication'
      puts 'i am uniq for method 2'
      puts 'second duplication'
    end
  end
end

class After
  class << self
    def method1
      dups do
        puts 'i am uniq for method 1'
      end
    end
    
    def method2
      dups do
        puts 'i am uniq for method 2'
      end
    end
    
    def dups
      puts 'first duplication'
      yield
      puts 'second duplication'
    end
  end
end


puts "Before:"
Before.method1
puts
Before.method2
puts '*******'
puts "After:"
After.method1
puts
After.method2
#
# Before:
# first duplication
# i am uniq for method 1
# second duplication
#
# first duplication
# i am uniq for method 2
# second duplication
# *******
# After:
# first duplication
# i am uniq for method 1
# second duplication
#
# first duplication
# i am uniq for method 2
# second duplication