Pigeon Organizer Lab

Problem

I'm given a hash of information and I need to rearrange them into a new hash sorted in a different way.

To go from this:

pigeon_data = {
  :color => {
    :purple => ["Theo", "Peter Jr.", "Lucky"],
    :grey => ["Theo", "Peter Jr.", "Ms. K"],
    :white => ["Queenie", "Andrew", "Ms. K", "Alex"],
    :brown => ["Queenie", "Alex"]
  },
  :gender => {
    :male => ["Alex", "Theo", "Peter Jr.", "Andrew", "Lucky"],
    :female => ["Queenie", "Ms. K"]
  },
  :lives => {
    "Subway" => ["Theo", "Queenie"],
    "Central Park" => ["Alex", "Ms. K", "Lucky"],
    "Library" => ["Peter Jr."],
    "City Hall" => ["Andrew"]
  }
}

To this:

pigeon_list = {
  "Theo" => {
    :color => ["purple", "grey"],
    :gender => ["male"],
    :lives => ["Subway"]
  },
  "Peter Jr." => {
    :color => ["purple", "grey"],
    :gender => ["male"],
    :lives => ["Library"]
  },
  "Lucky" => {
    :color => ["purple"],
    :gender => ["male"],
    :lives => ["Central Park"]
  },
  "Ms. K" => {
    :color => ["grey", "white"],
    :gender => ["female"],
    :lives => ["Central Park"]
  },
  "Queenie" => {
    :color => ["white", "brown"],
    :gender => ["female"],
    :lives => ["Subway"]
  },
  "Andrew" => {
    :color => ["white"],
    :gender => ["male"],
    :lives => ["City Hall"]
  },
  "Alex" => {
    :color => ["white", "brown"],
    :gender => ["male"],
    :lives => ["Central Park"]
  }
}

What I Learned

While this one was challenging, I learned the most from this lab so far.

How to iterate through a hash using .each and assigning the keys and values different names.
I found that creating a new hash required to check to see if it exists which I found interesting. What I though I could do in one line, I had to do in three. I later found out I could do it in a single line using pigeon_list[:name] || = {} but I'm not sure how to use it yet.
I re-learned how to change something to a string using .to_s

Final Iteration

def nyc_pigeon_organizer(data)
  pigeon_list = {}
  data.each do |color_gender_lives, value|
    value.each do |stats, all_names|
      all_names.each do |name|
        if pigeon_list[name] == nil
          pigeon_list[name] = {}
        end
        if pigeon_list[name][color_gender_lives] == nil
          pigeon_list[name][color_gender_lives] = []
        end
        pigeon_list[name][color_gender_lives].push(stats.to_s)
      end
    end 
  end
  pigeon_list
end

Blog

Mark Harless

Problem

What I Learned

Final Iteration

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