Ruby：Hash.keys和Hash.values方法返回的键/值的顺序是什么？ [英] Ruby: What is the order of keys/values returned by Hash.keys and Hash.values methods?

问题描述

是否将项目添加到Hash的顺序相同？

Is it the same order in which the items were added to the Hash ?

推荐答案

Hash类的Ruby 1.9.2文档声明：

哈希枚举它们的值的顺序是相应的键被插入。

Cursory测试表明这确实适用于 Hash＃keys 和 Hash＃values ，尽管这些方法的相应文档似乎没有指定它。

Cursory tests suggest that this does indeed apply to both Hash#keys and Hash#values, although the corresponding documentation for those methods doesn't seem to specify it.

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