ruby - 比较 ruby​​ 中的对象

Question

考虑一下:

class Aaa
  attr_accessor :a, :b
end

x = Aaa.new
x.a, x.b = 1,2
y = Aaa.new
y.a, y.b = 1,2

puts x == y #=>false

有没有办法检查同一类型的类中所有公共(public)属性是否相等？

Answer 1

class Aaa
  attr_accessor :a, :b

  def ==(other)
    return self.a == other.a && self.b == other.b
  end
end

x = Aaa.new
x.a,x.b = 1,2
y = Aaa.new
y.a,y.b = 1,2
y = Aaa.new
y.a,y.b = 1,2
z = Aaa.new
z.a,z.b = 1,3

x == y # => true
x == z # => false