kjs222/modules_questions.markdown

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Created April 13, 2016 15:00

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What do you know about modules already? If little, what would you guess modules are all about?
Golf and basketball both use a ball. But if you're on a basketball court and ask for "the ball," no one is going to throw you a golf ball. Why? If you were as dumb as a computer, why would a golfd ball be an acceptable response?
You've learned about the object model and method lookups. What would the imapct be of injecting an additional ancestor into a class' lookup chain?

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I know little about modules. I think they are like classes, but only have methods, not state? Maybe a series of behavior that is likely to be needed for a given situation that you can access.
No one throws the golf ball because they take in the context - i.e. that you are standing on a basketball court. The computer doesn't know your context unless you tell it. So it has no basis on which to decide what type of ball to send of all the types of ball it knows about.
It would give that class access to the methods in the module. The module methods would be superceded by the methods in the class it self.

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