Ruby 如何按时间对哈希数组进行排序？

按时间对哈希数组排序的最佳方法是什么

[
  {:scenario_name=>"Scenario: Two different numbers", :scenario_line=>5, :feature_file=>"multiplication.feature", :time=>"0m2.004s"},
  {:scenario_name=>"Scenario: Sum of many numbers", :scenario_line=>6, :feature_file=>"addition.feature", :time=>"0m22.031s"},
  {:scenario_name=>"Scenario: Regular numbers", :scenario_line=>5, :feature_file=>"division.feature", :time=>"0m3.004s"},
  {:scenario_name=>"Scenario: Subtract two different numbers", :scenario_line=>6, :feature_file=>"subtraction.feature", :time=>"0m3.004s"}
]

因此，我希望它按时间排序（按降序排列），如：

时间是

String

s，所以我需要在之前将其转换为

Int

？或者有什么办法来分类吗？

这个怎么样

array.sort_by{|h| h[:time].scan(/[\d.]+/).map(&:to_f)}.reverse

ary = [
    {:scenario_name=>"Scenario: Two different numbers", :scenario_line=>5, :feature_file=>"multiplication.feature", :time=>"0m2.004s"},
    {:scenario_name=>"Scenario: Sum of many numbers", :scenario_line=>6, :feature_file=>"addition.feature", :time=>"0m22.031s"},
    {:scenario_name=>"Scenario: Regular numbers", :scenario_line=>5, :feature_file=>"division.feature", :time=>"0m3.004s"},
    {:scenario_name=>"Scenario: Subtract two different numbers", :scenario_line=>6, :feature_file=>"subtraction.feature", :time=>"0m3.004s"}
]

ary = ary.sort_by do |hash|
  match = /(\d+)m([\d.]+)s/.match hash[:time]
  -(match[1].to_f * 60 + match[2].to_f)
end

ary.each { |hash| p hash }

输出

{:scenario_name=>"Scenario: Sum of many numbers", :scenario_line=>6, :feature_file=>"addition.feature", :time=>"0m22.031s"}
{:scenario_name=>"Scenario: Subtract two different numbers", :scenario_line=>6, :feature_file=>"subtraction.feature", :time=>"0m3.004s"}
{:scenario_name=>"Scenario: Regular numbers", :scenario_line=>5, :feature_file=>"division.feature", :time=>"0m3.004s"}
{:scenario_name=>"Scenario: Two different numbers", :scenario_line=>5, :feature_file=>"multiplication.feature", :time=>"0m2.004s"}

---

您拥有的不是有效的Ruby表达式。是否将其转换为int？是否要忽略分数部分？你需要明确你的意图。正确的答案取决于这一点。我投票决定结束，因为你没有说清楚。很高兴知道这是你想要的。

ary = [
    {:scenario_name=>"Scenario: Two different numbers", :scenario_line=>5, :feature_file=>"multiplication.feature", :time=>"0m2.004s"},
    {:scenario_name=>"Scenario: Sum of many numbers", :scenario_line=>6, :feature_file=>"addition.feature", :time=>"0m22.031s"},
    {:scenario_name=>"Scenario: Regular numbers", :scenario_line=>5, :feature_file=>"division.feature", :time=>"0m3.004s"},
    {:scenario_name=>"Scenario: Subtract two different numbers", :scenario_line=>6, :feature_file=>"subtraction.feature", :time=>"0m3.004s"}
]

ary = ary.sort_by do |hash|
  match = /(\d+)m([\d.]+)s/.match hash[:time]
  -(match[1].to_f * 60 + match[2].to_f)
end

ary.each { |hash| p hash }

{:scenario_name=>"Scenario: Sum of many numbers", :scenario_line=>6, :feature_file=>"addition.feature", :time=>"0m22.031s"}
{:scenario_name=>"Scenario: Subtract two different numbers", :scenario_line=>6, :feature_file=>"subtraction.feature", :time=>"0m3.004s"}
{:scenario_name=>"Scenario: Regular numbers", :scenario_line=>5, :feature_file=>"division.feature", :time=>"0m3.004s"}
{:scenario_name=>"Scenario: Two different numbers", :scenario_line=>5, :feature_file=>"multiplication.feature", :time=>"0m2.004s"}