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Question 1

0votes

2answers

144views

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?...

A. WW

11

askedSep 22 at 13:39

Question 2

4votes

1answer

254views

How do I handle polymorphic domain models in a Clean Architecture data access layer?

Let's say I'm making a space 4X game (because I am!) and I have an ISpaceObject interface in my domain layer, with a number of classes such as Ship, Starbase, Planet, Wormhole, etc. implementing it. I ...

ekolis

577

askedMar 23 at 11:28

Question 3

5votes

5answers

977views

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

askedMar 6 at 13:30

Question 4

7votes

8answers

945views

Why is "one function do more than one thing" a disadvantage of "boolean parameter", but not in "polymorphism"?

According to Is it wrong to use a boolean parameter to determine behavior?, I know using boolean parameters to decide the behaviour is bad, for example, when using boolean parameters as the following:...

wcminipgasker2023

3,003

askedDec 23, 2024 at 7:15

Question 5

1vote

7answers

538views

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 ...

Marvin

222

askedJun 27, 2024 at 17:45

Question 6

2votes

0answers

81views

How to deal with implementation specific implementation accross interface boundaries

What to do if you end up in the following situationThe intent here is that b and c can be substitutable for a. The client creates a bar through foo_1, which later may be passed back to foo_1 through ...

user877329

501

askedApr 25, 2024 at 16:11

Question 7

-2votes

2answers

362views

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 ...

Jan van Wijk

115

askedApr 7, 2024 at 19:56

Question 8

2votes

3answers

976views

Should I still "replace conditional with polymorphism" if the condition is from dynamic load data?

I know there are already some questions about replacing if else with polymorphism, for example:Applying Replace Conditional with Composition in functional programmingIs it wrong to use any type of ...

wcminipgasker2023

3,003

askedFeb 2, 2024 at 3:00

Question 9

2votes

3answers

325views

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 ...

amarsha4

176

askedJan 16, 2024 at 21:28

Question 10

2votes

1answer

714views

Domain models: Can they be an abstract class

When talking about having a rich domain model successfully, in real applications, it needs to, somehow, access some abstraction of complex functionality (instead of being a row state calculator the ...

Vitor Figueredo Marques

329

askedAug 4, 2023 at 2:55

Question 11

3votes

1answer

398views

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?...

SRNissen

161

askedApr 27, 2023 at 15:17

Question 12

0votes

0answers

589views

What is the Best Practice for handling multiple Entities that behave identically?

Because I have multiple entities with unique fields, I need multiple repositories for each one even though each Entity will be handled exactly the same. What is the best way to handle these separate ...

dbrewster

139

askedMar 28, 2023 at 20:18

Question 13

-1votes

1answer

347views

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 ...

blow

109

askedMar 24, 2023 at 14:27

Question 14

0votes

1answer

203views

How to decide what view to show if I use polymorphism in the Model?

I am making a game of Monopoly. I call a method in my Board class which returns the current players square object! E.g Old Kent Road. Euston, Chance , Free parking. I use polymorphism to decide upon ...

Kevin Greetham

105

askedNov 14, 2022 at 1:11

Question 15

2votes

3answers

333views

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 statementsmodels should not contain business logicI am working on a ...

dbrewster

139

askedAug 22, 2022 at 17:28

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Stack Exchange Network

Questions tagged [polymorphism]

A class that implements two interfaces that extend the same interface [duplicate]

How do I handle polymorphic domain models in a Clean Architecture data access layer?

Handling class specific behavior: polymorphism vs instanceof

Why is "one function do more than one thing" a disadvantage of "boolean parameter", but not in "polymorphism"?

How do I cleanly keep track of the type of various objects implementing a common interface without reflection?

How to deal with implementation specific implementation accross interface boundaries

Polymorphism with variable default argument count

Should I still "replace conditional with polymorphism" if the condition is from dynamic load data?

How to retain the concrete type when writing base-class-oriented code?

Domain models: Can they be an abstract class

How are interfaces implemented behind the scenes in the Go language?

What is the Best Practice for handling multiple Entities that behave identically?

Avoid use of the visitor pattern in this very common scenario

How to decide what view to show if I use polymorphism in the Model?

how to leverage overloading while keeping business logic out of models

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