Arrow-like proc handling in Ruby

ext.rb

class Object

  def itself
    self
  end

  %i[> >> * &].each { |method| define_method(method) { |*args| to_proc.send method, *args } }

end


class Proc

  def > other
    -> *xs { other.to_proc.(*self.(*xs)) }
  end

  def >> other
    -> *xs { other.to_proc.(self.(*xs)) }
  end

  def * other
    -> *xs, x { [*self.(*xs), other.to_proc.(x)] }
  end

  def & other
    -> *xs { [*self.(*xs), other.to_proc.(*xs)] }
  end

end