루비 배열을 평평하게한다

Question

나는 이것처럼 보이는 Array를 가지고있다.

[{"title"=>"ga:browser=Internet Explorer", "dimensions"=>[{:browser=>"Internet Explorer"}], "metrics"=>[{:pageviews=>2047}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Internet%20Explorer&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Safari", "dimensions"=>[{:browser=>"Safari"}], "metrics"=>[{:pageviews=>1196}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Safari&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Firefox", "dimensions"=>[{:browser=>"Firefox"}], "metrics"=>[{:pageviews=>835}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Firefox&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Chrome", "dimensions"=>[{:browser=>"Chrome"}], "metrics"=>[{:pageviews=>227}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Chrome&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Mozilla Compatible Agent", "dimensions"=>[{:browser=>"Mozilla Compatible Agent"}], "metrics"=>[{:pageviews=>60}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Mozilla%20Compatible%20Agent&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Opera", "dimensions"=>[{:browser=>"Opera"}], "metrics"=>[{:pageviews=>33}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Opera&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=BlackBerry9700", "dimensions"=>[{:browser=>"BlackBerry9700"}], "metrics"=>[{:pageviews=>8}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=BlackBerry9700&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=BlackBerry8900", "dimensions"=>[{:browser=>"BlackBerry8900"}], "metrics"=>[{:pageviews=>7}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=BlackBerry8900&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Mozilla", "dimensions"=>[{:browser=>"Mozilla"}], "metrics"=>[{:pageviews=>2}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Mozilla&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}, {"title"=>"ga:browser=Camino", "dimensions"=>[{:browser=>"Camino"}], "metrics"=>[{:pageviews=>1}], "id"=>"http://www.google.com/analytics/feeds/data?ids=ga:12316&ga:browser=Camino&start-date=2010-02-27&end-date=2011-02-27", "updated"=>#}]

가되도록 평평하게하는 간단한 방법이 있나요 :

[2047,1196,835,227,60,33,8,7,2,1]

또한

['Internet Explorer','Firefox','Chrome','Mozilla Compatible Agent','Opera','BlackBerry9700','Mozilla','Camino']

Answer 1

이 data

로 배열 할당은

pageviews = data.map{|d| d["metrics"][0][:pageviews]} #= [2047, 1196...] 

browsers = data.map{|d| d["dimensions"][0][:browser]} #= ['Internet Explorer', 'Firefox', ...] 

Answer 2

Flatten은 배열을 생성합니다. 궁금한데, 아마 출력을위한 것 같아요 아마 당신은 값으로 배열을 가지고 해시를 원합니까? 그것은 당신이 찾고있는 것입니까?

{ '제목'=이> [ "GA : 브라우저가 = Internet Explorer가", "GA : 브라우저 사파리 ="]}

그렇다면, 이런 일이 (편곡이 배열 인 상태) 일 수 있습니다

를

newdata=arr.inject({}) do |memo,subhash| 
    subhash.each do |key,val| 
    memo[key] ||= [] 
    memo[key] << val 
    end 
    memo 
end 

puts newdata.inspect 

puts newdata['title'].inspect