Apples And Holidays

Objectives

  1. Iterate over nested, or multidimensional, hashes.

The Holiday Suppliers

Instructions

You have a bunch of decorations for various holidays organized by season.

holiday_supplies = {
  :winter => {
    :christmas => ["Lights", "Wreath"],
    :new_years => ["Party Hats"]
  },
  :summer => {
    :fourth_of_july => ["Fireworks", "BBQ"]
  },
  :fall => {
    :thanksgiving => ["Turkey"]
  },
  :spring => {
    :memorial_day => ["BBQ"]
  }
}

Write your methods in lib/holiday.rb; use the comments in each method as guides.

  • Write a method that returns the second supply for the Fourth of July. For example:
def second_supply_for_fourth_of_july(holiday_supplies)
  holiday_supplies[:summer][:fourth_of_july][1]
end
  • Write a method that adds a supply to both Winter holidays.

  • Write a method that adds a supply to Memorial Day.

  • Write a method that adds a new holiday and its associated supplies to any season.

  • Write a method to collect all Winter supplies from all the winter holidays. For example:

winter_supplies(holiday_supplies) #=> ["Lights", "Wreath", etc]
  • Write a method that uses a loop to list out all the supplies you have for each holiday and the season. Use string manipulation to get your output to match what the test is expecting.

Here are a few helpful tips:

  • Our hash keys are symbols. We need to convert them into strings. Use the .to_s method on a symbol to convert it into a string.
  • Look closely at the output string that the test is expecting. You'll notice that it expects holiday names, like "New Years", to have both words capitalized. Ruby has a .capitalize method that you can call on a string. But, note:
    • .capitalize returns the capitalized string but doesn't change the original string. So, when you call on that same string in the future, it isn't capitalized! You can capitalize a string for now and evermore by using the bang operator (!).
    • You'll need to capitalize both words in a given holiday's name. If you call "new years".capitalize!, it will return "New years". In order to capitalize both words, you'll need to .split the string into an array and iterate over that array to .capitalize! each word in it. Then, you'll need to .join the array back into a string.
    • If you're unfamiliar with the methods mentioned above, look them up in the Ruby documentation.

Example of expected output:

Winter:
  Christmas: Lights, Wreath
  New Years: Party Hats
  • Write a method to collect all holidays with "BBQ" in the supply array. The method should behave as seen below:
holidays_with_bbqs(holiday_supplies)
#=> [:fourth_of_july, :memorial_day]

Reminder: This is a challenging lab, so remember to use Pry, Google, and the Flatiron School community to help you get the tests passing.

Resources

Unlock your future in tech
Learn to code.

Learn about Flatiron School's Mission

With a new take on education that falls somewhere between self-taught prodigy and four-year computer science degree, the Flatiron School promises to turn students with little programming experience into developers.

In the six months since the Manhattan coding school was acquired by WeWork, it has spawned locations in Washington, D.C., Brooklyn, and London. Now, WeWork is opening a fourth Flatiron School location, this time in Houston.

Adam Enbar, Flatiron School's cofounder, believes now is the time to grow. "How the world is changing has impacted working and learning in very similar ways. We think education fundamentally is about one thing: enabling people to pursue a better life."

Learn. Love. Code.
Students come to Flatiron School to change their lives. Join our driven community of career-changers and master the skills you need to become a software engineer or a data scientist.
Find Us