Questions tagged [polymorphism]
Polymorphism is about using objects of a type uniformly, regardless of their subtype.
206 questions
0 votes
2 answers
142 views
A class that implements two interfaces that extend the same interface [duplicate]
I'll get straight to the point. I want to implement a class structure in Java similar to the one in the image. Am I falling into bad practice with this kind of diamond-shaped interface implementation?...
- 11
5 votes
5 answers
976 views
Handling class specific behavior: polymorphism vs instanceof
I'm designing a system with different types of components, and I'm trying to decide whether to use polymorphism or instanceof checks for handling type-specific behavior. I see two possible approaches: ...
user466728
1 vote
7 answers
537 views
How do I cleanly keep track of the type of various objects implementing a common interface without reflection?
In my multiplayer game I keep track of each player's inventory. I have a class for each inventory action that extends the abstract class InventoryItem. I then polymorphically call use() on the ...
- 222
-2 votes
2 answers
359 views
Polymorphism with variable default argument count
I'm in the process of writing a library in Python, and I've run into a design problem concerning the use of polymorphism. I have an ABC with abstract method 'foo': class A(ABC): @abstractmethod ...
- 115
2 votes
3 answers
325 views
How to retain the concrete type when writing base-class-oriented code?
A scenario often arises when attempting to make some existing code reusable. I introduce an interface to represent the commonality between some new feature I'm implementing and some existing ...
- 176
3 votes
1 answer
395 views
How are interfaces implemented behind the scenes in the Go language?
I have read this article which indicates a double tuple structure, but it is unfortunately light on implementation details, which is what I am looking for. So... how are interfaces implemented in Go? ...
- 161
-1 votes
1 answer
346 views
Avoid use of the visitor pattern in this very common scenario
Let's assume we need to send a message, and to do so we would like our client to be concerned only with constructing the message (DTO) and using a facade service to send it. We already know that we ...
- 109
2 votes
3 answers
332 views
how to leverage overloading while keeping business logic out of models
I am running into a conflict between two best practice principles- overloading should be used instead of long chained if/else statements models should not contain business logic I am working on a ...
- 139