komplexe Anordnung von Hashes mit Ruby

Question

def

twitter_data 
    [{"LaunchAcademy"=> 
    {"description"=> 
    "A 10 week, intensive bootcamp teaching you how to code with a focus on Ruby on Rails", 
    "last twenty tweets"=> 
    ["RT @chrisccerami: While learning web development I created a map of all of the shows @Screamales have played and damn @DonGiovanniRecs http…", 
     "6 ways to quantify your code and why you need to do it: by @kevinrcasey , 
     "Do more of what you want at work. How to create productive partnerships: by @benvoss", 
     "RT @Pistachio: SO rad. bunch of local women learning to code with @gdiBoston at @HubSpot right now: , 
     "RT @STWatkins78: Huge breakthrough on my breakable toy today...can upload local file to soundcloud from my app...time for a beer! #LaunchAc…", 
     "Just say yes to opportunities, especially if they scare you. great advice by @kerry_benjamin1", 
     "How the internet is changing software and business, using Ruby as an example: by @ukitazume , 
     "RT @chrisccerami: @JustusEapen @LaunchAcademy @MarsCuriosity , 
     "Come build some interesting projects! @womenwhocode Hack Night tomorrow. RSVP:, 
     "RT @SpencerCDixon: One of the greatest parts of being a developer is the massive amount of control you have over a computer. Feels very emp…", 
     "7 reasons to love Minitest for testing Ruby code: by @FluxusFrequency, a graduate from our friends @gschool", 
     "Interested in becoming a game developer? Here's how: via @skilledup , 
     "Web developer hiring trends, and what they mean for you: by @walesmd , 
     "RT @chrisccerami: I recently built my first API in Rails which I hope makes photos from Mars courtesy of @MarsCuriosity more accessible to …", 
     "Build things that last. Make sure your work lives beyond you. by @acolangelo", 
     "Thanks to everyone who came to Ship It! Saturday! Check out the latest blog post for a recap:, 
     "Write your code as if your best friend's inheriting it by @MGraybosch, 
     "Coding can improve the way we run the world. Old, but inspiring TED talk by @pahlkadot: , 
     "Practicing pitches and getting ready for Career Day, coming up on January 27th and 28th! , 
     "RT @lizvdk: The cool kids use GEOjson so I did too. Here's how I build it with Ruby: ], 
    "number of followers"=>3590, 
    "number of friends"=>699, 
    "latest tweet"=> 
    "RT @chrisccerami: While learning web development I created a map of all of the shows @Screamales have played and damn @DonGiovanniRecs http…", 
    "number of tweets"=>1433, 
    "location"=>"Boston, MA"}}, 
{"dpickett"=> 
    {"description"=>"Co-Founder at @LaunchAcademy, Co-Organizer of @bostonrb", 
    "last twenty tweets"=> 
    ["RT @MeetingBoy: If your employees worked until 3AM, you have failed as a manager.", 
     "Glad to see two organizations that are near and dear to me (@EntrepreneurOrg and @YEC) at the top of this list: , 
     "@lizvdk I had the same reaction - it was like they spent the last 45 minutes trolling the movie industry.", 
     "RIP @jamesgolick - I learned so much from you, and always thought you were one of the most professional and skilled devs I've ever met :-(", 
     "Aspiring devs, if you need an example of a professional that embodies all we try to teach and more, look to @hchood Thank you! I'll miss you", 
     "Some notes for my facilitation tomorrow on debugging JavaScript: , 
     "@marcomorawec and @kenmazaika great having you guys at Mission Control! Love meeting folks with their hearts in technical education :-)", 
     "RT @graysky: \"Resumes suck. Here’s the data.\" by @alinelernerLLC Most create similar, unhelpful resume", 
     "@paulanthonywils @searls @markbates I reported the @bostonrb imitator as spam. Seems like the right thing to do", 
     "@divineanimal @LaunchAcademy we're delighted to have you! :-) See you soon and keep us posted on how prelearning is going.", 
     "sad to hear about @ezmobius passing. His work at @engineyard and some of his conference talks blew my mind. A source of wisdom for many. RIP", 
     "Thank you! , 
     "@jboursiquot happy birthday man!", 
     "lol! the irony of this error message!, 
     "such refreshing honesty \"If you really believe that you and your business are one, business failure destroys you\, 
     "RT @bostonrb: Instead of our monthly meeting, we're going to party in December! Join us at the Black Rose on 12/9 @ 7PM. RSVP @ https://t.c…", 
     "@dan_kleiman @LaunchAcademy @heroiceric Mr. G is shedding a tear right now.", 
     "@kdaigle I always consider there to be a 2 or 3 year lag in enterprise adoption of ideas like that.", 
     "Change is good. \"Why Google doesn’t care about hiring top college graduates\" by @MaxNisen", 
     "This is why I can't read TechCrunch. What an uninformed piece, and a total misunderstanding of the term \"full stack\], 
    "number of followers"=>1604, 
    "number of friends"=>874, 
    "latest tweet"=> 
    "RT @MeetingBoy: If your employees worked until 3AM, you have failed as a manager.", 
    "number of tweets"=>3451, 
    "location"=>"ÜT: 42.132759,-71.132183"}}, 

ich, wie man bestimmten Informationen rufen für das Array von Hashes, was ich kämpfe, um auf von allen Hashes auf einmal zu bekommen. Wie kann ich jeden Benutzer und seine Beschreibung auf einmal ausdrucken? Beispiel

LaunchAcademy: A 10 week, intensive bootcamp teaching you how to code with a 
    focus on Ruby on Rails 
    dpickett: Co-Founder at @LaunchAcademy, Co-Organizer of @bostonrb 

Answer 1

twitter_data.each do |data| 
    puts "#{data.keys[0]}: #{data[data.keys[0]]['description']}" 
end 

Answer 2

Lassen Sie uns zunächst mit einem günstigeren Datensatz starten.

Wenn wir sehen, was wir haben, ist es einfach zu sehen, wie die Beschreibungen auf der Konsole gedruckt werden können.

twitter_data.each do |h| 
    k,v = h.first 
    puts "Description for #{k}: #{v["description"] }" 
end 
    # Description for LaunchAcademy: A 10 week, intensive bootcamp 
    # Description for dpickett: Co-Founder, Co-Organizer 

Die Schritte sind wie folgt. Das erste Element ist mit dem Block übergeben, und die Blockvariable h wird gleich diesem Element:

h = twitter_data.first 
    #=> {"LaunchAcademy"=>{"description"=>"A 10 week, intensive bootcamp", 
    #      "last 2 tweets"=>["Hi ho", "Vote for a nasty person!"], 
    #      "number of friends"=>1}} 

Der erste (und einzige) Schlüssel-Wert-Paar dann extrahiert und die Blockgrößen k und 'v zugeordnet sind, der Schlüssel und Wert jeweils parallel assignement (manchmal auch als Mehrfachzuordnung ) unter Verwendung von:

k,v = h.first 
    #=> ["LaunchAcademy", 
    # {"description"=>"A 10 week, intensive bootcamp", 
    #  "last 2 tweets"=>["Hi ho", "Vote for a nasty person!"], 
    #  "number of friends"=>1}] 
k #=> "LaunchAcademy" 
v #=> {"description"=>"A 10 week, intensive bootcamp", 
    # "last 2 tweets"=>["Hi ho", "Vote for a nasty person!"], 
    # "number of friends"=>1} 

der String puts ‚ED ist daher

01.235.

"Description for #{k}: #{v["description"]}" 
    #=> "Description for LaunchAcademy: A 10 week, intensive bootcamp" 

Die gleichen Schritte werden für das zweite Element von twitter_data befolgt.