Easier method chaining for Ruby

chaining.rb

# Only for those who are too lazy to write `self` at the end of their methods

def tapper(m)
  Module.new do
    define_method(m) do |*a, **k, &b|
      tap { super(*a,**k, &b) }
    end
  end
end

def chaining
  singleton_class.define_method(:method_added) do |m|
    prepend tapper(m)
  end
end

return unless $0 == __FILE__

class C
  attr_reader :x
  def initialize(x)
    @x = x
  end

  chaining

  def foo
    @x += 1
  end

  def bar
    @x *= 2
  end

  def baz
    @x **= 2
  end
end

pp C.new(1).foo.bar.baz.x # => 16