Ruby:合并嵌套散列 [英] Ruby: merge nested hash
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问题描述
a = {:book =>
pre>
[{:title =>Hamlet,
:author =>William Shakespeare
}]}
b = {:book =>
[{:title =>Pride and Prejudice,
:author =>Jane Austen
}]}
我希望合并为:
{:书=>
[{:title =>Hamlet,
:author =>William Shakespeare},
{:title =>傲慢与偏见,
:author =>Jane Austen}]}
解决方案对于rails 3.0.0+或更高版本,有 deep_merge 功能,用于 ActiveSupport ,它完全符合您的要求。
I would like to merge a nested hash.
a = {:book=> [{:title=>"Hamlet", :author=>"William Shakespeare" }]} b = {:book=> [{:title=>"Pride and Prejudice", :author=>"Jane Austen" }]}
I would like the merge to be:
{:book=> [{:title=>"Hamlet", :author=>"William Shakespeare"}, {:title=>"Pride and Prejudice", :author=>"Jane Austen"}]}
What is the nest way to accomplish this?
解决方案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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