获取Ruby中数组的差异 [英] Get difference of arrays in Ruby

问题描述

可能的重复:
区分 ruby​​ 字符串或数组

我有一个旧数组:[1, 2, 3, 4, 5] 和新数组:[1, 2, 4, 6]

I have an old array: [1, 2, 3, 4, 5], and new: [1, 2, 4, 6]

如何与 Ruby 不同:删除 5, 3 并添加 6?

How to get difference with Ruby: that 5, 3 was removed and 6 was added?

推荐答案

irb(main):001:0> a = [1, 2, 3, 4, 5]
=> [1, 2, 3, 4, 5]
irb(main):002:0> b = [1, 2, 4, 6]
=> [1, 2, 4, 6]
irb(main):003:0> a - b
=> [3, 5]
irb(main):005:0> b - a
=> [6]
irb(main):006:0>

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