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by didibus
3219 days ago
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No, sum types and product types relate to values, inheritance and composition relate to objects, which include values AND behavior. Inheritance is therefore abused to share behavior. This distinction is important, and relates to some common OOP patterns of popular languages. In that model, composition of behaviour over inheritance is definitly important to understand, as overriding behaviour gets tricky quickly, and functionality is spread accross many class in the inheritance chain, it becomes difficult to follow and see the full picture. |
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I remember back in high school or early college I was having a conversation with a programmer about when the right time to use inheritance is, and he stated that "inheritance should be used for polymorphism, not just to share code", which to this day I think it's a fairly good heuristic for determining whether or not inheritance is the right tool for a given problem.