ruby-on-rails - 使用哈希数组我需要比较两个值

Question

我有以下哈希数组:

 [{"dwidNote"=>14, "StreetAddress"=>"250 Palm Valley Blvd.", "PropertyAddress"=>"250 Palm Valley Blvd."},
 {"dwidNote"=>16, "StreetAddress"=>"2801 Alaskan Way", "PropertyAddress"=>"2801 Alaskan Way"},
 {"dwidNote"=>17, "StreetAddress"=>"300 LAKESIDE DRIVE", "PropertyAddress"=>"300 LAKESIDE DRIVE  "},
 {"dwidNote"=>18, "StreetAddress"=>"3817 PARKDALE", "PropertyAddress"=>"3817 PARKDALE  "}]

我需要比较键 StreetAddress 和 PropertyAddress 的值，看看它们是否匹配。对于不匹配的值，我需要显示键 dwidNote 的值。我该怎么做？

Answer 1

假设您的数组位于名为 a 的变量中，那么:

a.select{|e| e['StreetAddress'] != e['PropertyAddress']}.map{|e| e['dwidNote']}

将返回这个:

[17, 18]