Ruby Hash创建
Ruby Hash创建
提问于 2013-08-27 17:54:50
我是Ruby的新手，这些天我都在努力学习Ruby。我今天正在看Hash，遇到了与Hash相关的问题。
我有下面的哈希
{"key1" => ["param_1","param_2"], "key2" => ["param_3","param_4"], "key3" => "param_5", "key4" => "param_6","key5" => ["param_7","param_8"]}我想把上面的哈希转换成下面的内容。
{"my_hash" => [ {"name" => "key1","value" => ["param_1","param_2"]},
{"name" => "key2","value" => ["param_3","param_4"]},
{"name" => "key3","value" => ["param_5"]},
{"name" => "key4","value" => ["param_6"]},
{"name" => "key5","value" => ["param_7","param_8"]}
]
}有人能告诉我如何用Ruby高效地做这件事吗？
回答 1
Stack Overflow用户
回答已采纳
发布于 2013-08-27 17:57:37
hsh = {"key1" => ["param_1","param_2"],
"key2" => ["param_3","param_4"], "key3" => "param_5",
"key4" => "param_6","key5" => ["param_7","param_8"]}
hsh.map{|k,v| {name: k,value: Array(v) }}
# => [{:name=>"key1", :value=>["param_1", "param_2"]},
# {:name=>"key2", :value=>["param_3", "param_4"]},
# {:name=>"key3", :value=>["param_5"]},
# {:name=>"key4", :value=>["param_6"]},
# {:name=>"key5", :value=>["param_7", "param_8"]}]hsh = {"key1" => ["param_1","param_2"],
"key2" => ["param_3","param_4"], "key3" => "param_5",
"key4" => "param_6","key5" => ["param_7","param_8"]}
hsh.map{|k,v| {"name" => k,"value" => Array(v) }}
# => [{"name"=>"key1", "value"=>["param_1", "param_2"]},
# {"name"=>"key2", "value"=>["param_3", "param_4"]},
# {"name"=>"key3", "value"=>["param_5"]},
# {"name"=>"key4", "value"=>["param_6"]},
# {"name"=>"key5", "value"=>["param_7", "param_8"]}]页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/18472385
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