Question

我在数组中有一些类似于以下内容的数据集：

array = [ "Name = abc", "Id = 123", "Interest = Rock Climbing" ]

我需要将其转换为哈希，如下所示：

hash = { "Name" => "abc", "Id" => "123", "Interest" => "Rock Climbing" }

我必须做错事，因为我与.shift.split进行了奇怪的映射，导致{“Name = abc”=＆gt;“Id = 123”}。感谢。

Answer 1

您需要做的就是将数组的每个部分拆分为一个键和值（产生一个双元素数组的数组），然后将结果传递给方便的Hash[]方法：

arr = [ "Name = abc", "Id = 123", "Interest = Rock Climbing" ]

keys_values = arr.map {|item| item.split /\s*=\s*/ }
# => [ [ "Name", "abc" ],
#      [ "Id", "123" ],
#      [ "Interest", "Rock Climbing" ] ]

hsh = Hash[keys_values]
# => { "Name" => "abc",
#      "Id" => "123",
#      "Interest" => "Rock Climbing" }

Answer 2

你可以这样做（使用Enumerable#each_with_object）：

array.each_with_object({}) do |a, hash|
    key,value = a.split(/\s*=\s*/) # splitting the array items into key and value
    hash[key] = value    # storing key => value pairs in the hash
end
# => {"Name"=>"abc", "Id"=>"123", "Interest"=>"Rock Climbing"}

如果您发现each_with_object有点难以理解，可以采用天真的方式（仅在key累积value和result_hash）：

result_hash = {}
array.each do |a|
    key,value = a.split(/\s*=\s*/) # splitting the array items into key and value
    result_hash[key] = value # storing key => value pairs in the result_hash
end
result_hash
# => {"Name"=>"abc", "Id"=>"123", "Interest"=>"Rock Climbing"}

Answer 3

试试这个

array.map {|s| s.split('=')}.to_h

=> {"Name "=>" abc", "Id "=>" 123", "Interest "=>" Rock Climbing"}

将键值对的数组转换为Ruby中的哈希值

3 个答案: