Tee.rb

gistfile1.rb

class Object
  # as inspired by bash
  def tee(*functions)
    self.tap do
      args.map { |arg| arg.call(self) }
    end
  end
end
class SomeClass
  def g
    "return value"
  end
  def f
    g.tee(logger.method(:debug))
  end
end

SomeClass.new.f