Differences between inheritance in Python and composition in Go
Key Points about Inheritance in Python:
- Establishes an "is-a" relationship. For example, a
Dog
is anAnimal
. - Encourages reuse of code but can lead to tightly coupled code and complex hierarchies.
- Supports polymorphism, where a subclass can be used wherever its superclass is expected.
- Enables code reuse and establishes a hierarchical relationship between classes.
Key Points about Composition in Go:
- Encourages a "has-a" relationship. For example, a
Dog
has anAnimal
(behavior). - Promotes loose coupling and flexible code structure.
- Composition is often preferred in Go for its simplicity and the ability to easily mix and match behaviors.
- Go supports embedding, where methods of the embedded type are promoted to the embedding type, allowing behavior similar to inheritance without the tight coupling.