/apples-and-holidays

Primary LanguageRubyOtherNOASSERTION

tags languages resources
collect, map, select, hashes, iteration, enumerables, compact, flatten
ruby
2

Apples and Holidays

Objectives

Get comfortable interating over arrays and hashes. This lab is broken into two sections: apple picker and holiday supplies.

Apple Picker

Instructions

In lib/apple.rb write two methods that will pick the apples out of the fruits array, one using select, and the other using collect.

fruits = ["apple", "orange", "apple"]

apple_picker_with_select(fruits) #=> ["apple", "apple"]

Think about the difference between select and collect. Which one makes more sense to use? What do you think the benefits are of using one over the other, in this case?

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 eg:
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 a Winter holiday.

  • 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 eg:

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.

Output:

Winter:
  Christmas: Lights, Wreath
  New Years: Party Hats
  • Write a method to collect all holidays with BBQ. For eg:
holidays_with_bbqs(holiday_supplies) #=> [:fourth_of_july, :memorial_day]

Resources