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我如何把这架Rubyh变成一个阵列?
原标题:How would I convert this Ruby hash to an array?

我有这一数据。

[{"total_time"=>"00:04:48.563044"}, {"total_time"=>"00:05:29.835918"}, {"total_time"=>"00:09:38.622569"}]

但我希望:

["00:04:48.563044", "00:05:29.835918", "00:09:38.622569"]

需与Ruby合作。

最佳回答

您可以这样做:

list.collect(&:values).flatten
问题回答

实现这一目标的途径有一线。 让我们把它分解成你需要达到的基本步骤:

  1. Iterate over each item in the array of hashes
  2. For each item, grab the time value
  3. Reassemble those into a list

由于你想要抓住每个项目的结果,而不只是看上去,你希望使用<代码>><>>>>>>>(或<代码>(>. / 代码>)“,它们照搬同一方法”。 这将采取第1和第3步骤。 第2步本身非常容易。 您只需要获得<代码>项目[全时]的关键值。 all:

times.map{ |time| time[ total_time ] }

谈到实现这一目标的途径:

a = [{"total_time"=>"00:04:48.563044"}, {"total_time"=>"00:05:29.835918"}, {"total_time"=>"00:09:38.622569"}]

p a.map(&:flatten).map(&:last)




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