Question

这是我的哈希：

react-native run-ios

您可以从中看到，每个哈希表中的密钥{"Specialty"=>"Other (note in description);Medical;Dental;Vision", "Value"=>"https://www.example.com/ca"} {"Value"=>"P.O. BOX 60007 LOS ANGELES, CA 90060"} {"Specialty"=>"Pharmacy;Medical", "Value"=>"800-824-0898"} {"Specialty"=>"Urgent Care;Medical", "Value"=>"800-700-9186"} {"Specialty"=>"Urgent Care;Emergency Care;Medical;Chiropractor;Acupuncture", "Value"=>"800-677-6669"} {"Specialty"=>"Pharmacy;Medical", "Value"=>"https://www.example.com"} {"Specialty"=>"Claims", "Value"=>"https://www.example.com/consumer/claims/claimsoverview"} {"Specialty"=>"Urgent Care;Emergency Care;Medical;Chiropractor;Acupuncture", "Value"=>"https://example/example/apps/services/www/ABCBS/mobilewebapp/default/index.html#/providers/search"} {""Specialty"=>"Claims;Customer Service;Medical", "Value"=>"800-888-8288"}都有value个不同，我想只打印一个特定值，即values

我尝试用P.O. BOX 60007 LOS ANGELES, CA 90060打印哈希值，然后打印值的所有内容。我尝试使用hash["value"]函数将它们加载到array[]中以打印我想要的值，但是一个数组加载了所有这些值，或者我可能正在加载数组错误。

to_s

有人可以帮助我如何打印特定的哈希值，尽管名为array = [] array = medical.split("\n") text = array.to_s text1 = array.index{|s| s.include?("P.O.")} puts text1

的键中存在各种值

Answer 1

如果具体是hash的模式，我可以理解的唯一性是所有哈希都有多个键，除了你正在寻找的那个......把它当作一个哈希数组

hashes.each{ |hash| break hash['Value'] if hash.keys == ['Value'] }

<强>更新

从评论中，您可以直接检查并打印所需的值，而不是单独打印哈希值。

results1.map{ |result1| (value = result1['Value']).include?('P.O. BOX') ? value : nil }.compact

它将返回具有子串P.O. BOX

的字符串数组

Answer 2

假设你有一系列哈希，你想搜索'P.O.'字符串然后你可以这样做：

arr.select { |hash| hash["Value"][/P\.O\./] }.flat_map(&:values)
#=> ["P.O. BOX 60007 LOS ANGELES, CA 90060"]

Answer 3

array_hashes = [
    {"Specialty"=>"Other (note in description);Medical;Dental;Vision", "Value"=>"https://www.example.com/ca"},
    {"Value"=>"P.O. BOX 60007 LOS ANGELES, CA 90060"},
    {"Specialty"=>"Pharmacy;Medical", "Value"=>"800-824-0898"},
    {"Specialty"=>"Urgent Care;Medical", "Value"=>"800-700-9186"},
    {"Specialty"=>"Urgent Care;Emergency Care;Medical;Chiropractor;Acupuncture", "Value"=>"800-677-6669"},
    {"Specialty"=>"Pharmacy;Medical", "Value"=>"https://www.example.com"},
    {"Specialty"=>"Claims", "Value"=>"https://www.example.com/consumer/claims/claimsoverview"},
    {"Specialty"=>"Urgent Care;Emergency Care;Medical;Chiropractor;Acupuncture", "Value"=>"https://example/example/apps/services/www/ABCBS/mobilewebapp/default/index.html#/providers/search"},
    {"Specialty"=>"Claims;Customer Service;Medical", "Value" => "800-888-8288"}] 

> array_hashes.select{|h| h["Value"].include?("P.O.")}.flat_map(&:values).first
#=> "P.O. BOX 60007 LOS ANGELES, CA 90060"

将ruby散列中的键值组合在一个散列中并打印特定值

3 个答案: