Ruby:将两个哈希合并为一个并连接值

时间:2010-05-20 05:51:42

标签: ruby hash merge

2哈希:

h1 = { "s1" => "2009-7-27", "s2" => "2010-3-6", "s3" => "2009-7-27" }

h2 = { "s1" => "12:29:15", "s2" => "10:00:17", "s3" => "12:25:52" }    

我想将这两个哈希合并为:

h = { "s1" => "2009-7-27 12:29:15",
      "s2" => "2010-3-6 10:00:17", 
      "s3" => "2009-7-27 2:25:52" }

这样做的最佳方式是什么?谢谢!

2 个答案:

答案 0 :(得分:35)

h = h1.merge(h2){|key, first, second| first + " " + second }

如果您的密钥相同,它将起作用。在你的代码中,它们不是(“s1”vs“s1 =”)。它们应该是相同的键吗?

答案 1 :(得分:3)

你的意思是:

Hash[h1.map{|k,v| [k, "#{v} #{h2[k]}"]}]

 => {"s3"=>"2009-7-27 12:25:52", "s1"=>"2009-7-27 12:29:15", "s2"=>"2010-3-6 10:00:17"}

注意哈希是无序的,如果你想要一个有序的哈希,你可能需要查看at this