将 Ruby 哈希值转换为数组 [英] Converting Ruby hashes to arrays

问题描述

我有一个哈希，它的形式是<代码>{:a =>{aa"=>11，ab"=>12}, :b =>{巴"=>21,"bb" =>22}}

I have a Hash which is of the form {:a => {"aa" => 11,"ab" => 12}, :b => {"ba" => 21,"bb" => 22}}

我如何将其转换为 {:a => 形式[["aa",11],["ab",12]],:b=>[["ba",21],["bb",22]]}

推荐答案

如果你想修改原来的hash可以这样做:

If you want to modify the original hash you can do:

hash.each_pair { |key, value| hash[key] = value.to_a }

来自 Hash#to_a

将 hsh 转换为 [ 的嵌套数组键，值 ] 数组.

Converts hsh to a nested array of [ key, value ] arrays.

h = { "c" =>300, "a" =>100，d"=>400，c"=>300 }

h.to_a #=>[["c", 300], ["a", 100], ["d", 400]]

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