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问题描述
我想合并一个嵌套的哈希.
I would like to merge a nested hash.
a = {:book=>
[{:title=>"Hamlet",
:author=>"William Shakespeare"
}]}
b = {:book=>
[{:title=>"Pride and Prejudice",
:author=>"Jane Austen"
}]}
我希望合并为:
{:book=>
[{:title=>"Hamlet",
:author=>"William Shakespeare"},
{:title=>"Pride and Prejudice",
:author=>"Jane Austen"}]}
实现此目的的嵌套方法是什么?
What is the nest way to accomplish this?
推荐答案
对于 rails 3.0.0+ 或更高版本，有 deep_merge 用于 ActiveSupport 的功能，完全符合您的要求.
For rails 3.0.0+ or higher version there is the deep_merge function for ActiveSupport that does exactly what you ask for.
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