鉴于我有哈希数组，我怎样才能将它们排序(使用ruby​​)为podium样式(使用它们的created_at值)，如下图所示？[{created_at:"DATETIME",src:"..."},{created_at:"DATETIME",src:"..."},{created_at:"DATETIME",src:"..."},{created_at:"DATETIME",src:"..."}] 最佳答案 arr.sort_by{|a|a['created_at']}.inject([]){|r,e|r.reverse有趣的问题!

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