What is the difference between inheritance and composition in object-oriented programming?
Inheritance is a mechanism where a new class derives properties and behavior from an existing class, while composition involves building classes using references to other classes, allowing for more flexible and reusable code.
Can you give me an example of each?
Sure! For inheritance, consider a class Animal
and a subclass Dog
that inherits from it. For composition, you might have a class Car
that uses an Engine
class as a component.
Which one is generally preferred?
Composition is often preferred because it promotes code reuse and flexibility, allowing for easier changes and maintenance.
Are there any downsides to using inheritance?
Yes, inheritance can lead to tight coupling between classes and can make the codebase harder to manage, especially with deep inheritance hierarchies.
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