使用代理对象欺骗Ruby的案例运算符===

class Person
  attr_accessor :name, :age

  def initialize(name, age)
    @name = name
    @age = age
  end

  def ===(other)
    if other.is_a?(Person)
      self.name == other.name && self.age == other.age
    else
      false
    end
  end
end

person1 = Person.new("Alice", 25)
person2 = Person.new("Bob", 30)
person3 = Person.new("Alice", 25)

puts person1 === person2  # 输出 false
puts person1 === person3  # 输出 true