ruby - how do i get the uniq value for this hash? -


i want uniq region , filtered "status = stopped". without using loop. possible?

hash:

{"a123" => {"status"=>"stopped", "region"=>"us-east"},  "b123" => {"status"=>"stopped", "region"=>"us-east"},  "c123" => {"status"=>"stopped", "region"=>"us-west"},  "d123" => {"status"=>"running", "region"=>"us-west"},  "e123" => {"status"=>"running", "region"=>"us-north"}}

my code filtering status:

hash.select{ |k, v| v["status"] == "stopped" }.values  #=> [{"status"=>"stopped", "region"=>"us-east"},      {"status"=>"stopped", "region"=>"us-east"},      {"status"=>"stopped", "region"=>"us-west"}]

i dont know what's next , want output :

#=> {"us-east", "us-west"}

i'm noob in ruby , hash. please ^_^

hash.map {|_,v| v['region'] if v['status'] == 'stopped'}.compact.uniq # => ["us-east", "us-west"]

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