ruby - 要散列的二维数组

Question

在 Ruby 中，给定一个数组:

{"server"=>["nginx/1.1.19"], "date"=>["Wed, 08 Jan 2014 18:48:02 GMT"],"content-type"=>["application/json; charset=utf-8"]}

将其转换为散列的最佳方法是什么:

{"server"=>"nginx/1.1.19", "date"=>"Wed, 08 Jan 2014 18:48:02 GMT","content-type"=>"application/json; charset=utf-8"}

Answer 1

您拥有的是Hash 而不是Array

h = {"server"=>["nginx/1.1.19"], "date"=>["Wed, 08 Jan 2014 18:48:02 GMT"],"content-type"=>["application/json; charset=utf-8"]}

Hash[h.map(&:flatten)]

# {"server"=>"nginx/1.1.19", "date"=>"Wed, 08 Jan 2014 18:48:02 GMT", "content-type"=>"application/json; charset=utf-8"}