TECH603 Day 5 Warmup

warmup.rb

# 1. Create a class named Country
class Country
end

# 2. Add the ability to read and write an attribute named "name". This should
#    be done using two methods.
#    HINT: the writer method has the `=` at the end
#    HINT HINT: use an ivar to store the name in the scope of the class
class Country
  def name
    @name
  end
  
  def name=(name)
    @name = name
  end
end


# 3. Create an instance of your Country class
country = Country.new

# 4. Set the name attribute
country.name = "Angola"

# 5. Get and display the name attribute
puts country.name

# 6. Add support to read and write an attribute named "id", but this time use
#    the Ruby macros for readers and writers.
class Country
  # attr_reader :id
  # attr_writer :id
  attr_accessor :id
end

# 7. Set and get the id attribute
country = Country.new
country.id = "CID"
puts country.id

# 8. Modify country to allow you to pass the name and id in when the country
#    is created.
class Country
  # constructor
  def initialize(name, id)
    @name = name
    @id = id
  end
end

country = Country.new("Angola", "AGO")
puts country.name, country.id

# reopen the class and "monkey patch" the `name` method
class Country
  def name
    "NAME NAME NAME NAME NAME NAME NAME"
  end
end

country = Country.new("Angola", "AGO")
puts country.name, country.id

# We can reopen any class!
class Fixnum
  def +(other)
    "Surprise!"
  end
end

puts 1 + 1