FAQ: Object-Oriented Programming I - Up, Up, and Away!

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This community-built FAQ covers the “Up, Up, and Away!” exercise from the lesson “Object-Oriented Programming I”.

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FAQs on the exercise Up, Up, and Away!

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2

My code has passed the task but I still have doubts if I understood well the following instruction: Pass Email ‘s initialize method the same two parameters passed to Message ‘s— from and to

This is how I interpret:

class Email < Message
def initialize (from, to)
@from = from
@to = to
super

Doesn’t feel right to me. Any thoughts?

3

There is no error in your code, but it is superfluous to have the initialize also set the instance variables.
This is the optimized solution - so when super is called it will execute the parent’s initialize method and set the instance variables.
class Email < Message
def initialize(from, to)
super
end
end

4

I don’t see the purpose of overriding a method only to do the exact same thing.

5

If we wanted to have an email inherit the “from” and “to” from the Message class, but ALSO store the subject variable, would this be the appropriate code?:

class Email < Message
  def initialize(from, to, subject)
    super
    @subject = subject
  end
end

Here, does super automatically pass from and to back into the parent Message class? Also, would we use a @@subject to make it a child class attribute, or would subject be an instance-only attribute?

6

I feel like the it was just to use ‘super’ in the exercise as practice than a real reason to do the exact same thing.
Someone more knowledge may correct me if I am wrong though.

7

Hello, well I would like to say, that I do not understand what is the purpose of the last excercise (from 16 to 20), since it produces nothing in the console.
I would recommend to change, modify and improve this last 4 excercise. So students/learners could see what is changing and what is going on here.
Honestly, without anything in the console it is pretty hard to understand its functionality.
I passed it with the help of the hints and solutions, but no idea what is that for…

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