获取Ruby中的数组差异

Question

可能重复:
diff一个ruby字符串或数组

我有一个旧的数组:[1, 2, 3, 4, 5]和新的:[1, 2, 4, 6]

如何与Ruby区别开来:5, 3已删除并6添加了？

Answer 1

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>