Ruby keyword arguments wtf

gistfile1.rb

class Demo1
  def initialize a:, b:
    @a = a
    @b = b
    puts "@a = #{@a.inspect} and @b = #{@b.inspect}"
  end
end
Demo1.new a: 'one', b: 'two'
# ==> @a = nil and @b = "two"



class Demo2
  def initialize a:, b:
    @wtf = 'asdfa'
    @a = a
    @b = b
    puts "@a = #{@a.inspect} and @b = #{@b.inspect}"
  end
end

Demo2.new a: 'one', b: 'two'
# ==> @a = "one" and @b = "two"

class Demo3
  def initialize a, b
    @a = a
    @b = b
    puts "@a = #{@a.inspect} and @b = #{@b.inspect}"
  end
end

Demo3.new 'one', 'two'
# ==> @a = "one" and @b = "two"

This was an issue in Ruby 2.1.2