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My relative is studying programming and has a hard time understanding classes. He has trouble understanding for example that you need to instantiate it, that methods cannot access variables in other methods and if you change a variable in one instance of a class it doesn't change for other instances.
I've tried to use analogies like a class definition is like a blueprint of a house. And instances are houses made from that blueprint.
How do you explain classes and OO in general?
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