在 ruby 中创建哈希数组
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Creating array of hashes in ruby
提问by Chirag Rupani
I want to create an array of hashes in ruby as:
我想在 ruby 中创建一个哈希数组，如下所示：
arr[0]
"name": abc
"mobile_num" :9898989898
"email" :[email protected]
arr[1]
"name": xyz
"mobile_num" :9698989898
"email" :[email protected]
I have seen hashand arraydocumentation. In all I found, I have to do something like
我看过哈希和数组文档。在我发现的所有内容中，我必须做类似的事情
c = {}
c["name"] = "abc"
c["mobile_num"] = 9898989898
c["email"] = "[email protected]"
arr << c
Iterating as in above statements in loop allows me to fill arr. I actually rowofrows with one row like ["abc",9898989898,"[email protected]"]. Is there any better way to do this?
在循环中的上述语句中进行迭代允许我填充arr. 我实际上排成一行，就像["abc",9898989898,"[email protected]"]. 有没有更好的方法来做到这一点？
回答by jboursiquot
Assuming what you mean by "rowofrows" is an array of arrays, heres a solution to what I think you're trying to accomplish:
假设你所说的“rowofrows”是一个数组数组，这是我认为你想要完成的一个解决方案：
array_of_arrays = [["abc",9898989898,"[email protected]"], ["def",9898989898,"[email protected]"]]
array_of_hashes = []
array_of_arrays.each { |record| array_of_hashes << {'name' => record[0], 'number' => record[1].to_i, 'email' => record[2]} }
p array_of_hashes
Will output your array of hashes:
将输出您的哈希数组：
[{"name"=>"abc", "number"=>9898989898, "email"=>"[email protected]"}, {"name"=>"def", "number"=>9898989898, "email"=>"[email protected]"}]
回答by aelor
you can first define the array as
您可以首先将数组定义为
array = []
then you can define the hashes one by one as following and push them in the array.
然后您可以如下一一定义散列并将它们推送到数组中。
hash1 = {:name => "mark" ,:age => 25}
and then do
然后做
array.push(hash1)
this will insert the hash into the array . Similarly you can push more hashes to create an array of hashes.
这会将哈希插入到数组中。同样，您可以推送更多散列以创建散列数组。
回答by miriamtocino
You could also do it directly within the push method like this:
您也可以直接在 push 方法中执行此操作，如下所示：
First define your array:
@shopping_list_items = []And add a new item to your list:
@shopping_list_items.push(description: "Apples", amount: 3)Which will give you something like this:
=> [{:description=>"Apples", :amount=>3}]
首先定义你的数组：
@shopping_list_items = []并向您的列表中添加一个新项目：
@shopping_list_items.push(description: "Apples", amount: 3)这会给你这样的东西：
=> [{:description=>"Apples", :amount=>3}]
