All Questions
Tagged with design-patternsinterfaces
95 questions
1vote
2answers
221views
It is okay to create an interface of interfaces?
Let me first describe the situation I have a component that uses dependency injection through a service locator. In the first scenario (image 1) the component needs a class that implements Interface0, ...
1vote
1answer
234views
Refactoring instanceOf, moving logic to POJO when it has database interaction
I'm refactoring some old code, I have a lot of istanceOf in the business part: if (record instanceof RecordA) { RecordA recordA = (RecordA) record; ...
- 521
0votes
1answer
294views
Exposing only the getters of a singleton interface in C++
I've got a file in my includes folder, which is the folder I expose, that isn't used externally and isn't supposed to be used too. When I noticed that and tried to remove it - I noticed that it's ...
- 123
0votes
2answers
685views
How to create an interface in C that can work on two identical structs with differently named fields
Question Background Consider a scenario in which I have two structs. Both consist of three fields for doubles. The only difference is the names used to refer to these fields. The first struct is for ...
- 111
1vote
2answers
217views
physical simulation: design thoughts
I'm an applied physics student and currently working on a simulation of the magnetic interactions of multiple protons within a protein. Me having only little experience with programming and almost ...
- 17
-1votes
1answer
390views
How to apply the Open-Closed design principle for different parameters in each class
I am a noob in design principles and design patterns, this might seem like a very silly question. Some classes in my code have the following structure (image linked): https://ibb.co/nrp1t2g As you can ...
- 99
0votes
4answers
609views
Adapter or pure interfaces?
I got a bit strange 'future ready' scenario. And I'm not sure if I got it right in regards to C# adapter design pattern. The scenario is that to be future ready, 'to use the adapter pattern' to easily ...
- 137
0votes
3answers
901views
Composite Pattern get part of the tree
I use java and I have structure with a class that contains id, title and perhaps some children of the same class. So I decided to use the composite pattern. I need to have a method getChildren() that ...
- 129
0votes
1answer
1kviews
How to expose C++ static library interface, extending Pimpl to an abstract interface
Until today I had a static C++ library with no separation between the public interface and internal headers. My other apps just linked to it, included the required headers, and used whatever they ...
0votes
2answers
177views
Encoding const-ness on interfaces. Readers - Writers vs Const wrapper
This question is based on this separate question on stack overflow. I have a very low-level structure meant to compactly save presets on flash memory. For simplicity I am going to use stored_record as ...
2votes
1answer
204views
Is it allowed to include the composition in the compositor in the Strategy Pattern
I have a range of different animals in my zoo such as turtles, birds etc. As they all share a common trait such as either swimming, flying etc., I thought a strategy pattern would be appropriate to ...
- 129
0votes
6answers
247views
Adding client specific method to a listener interface is a good idea?
I'm using a listener pattern where a class A listens for events from various classes B, C, D with the help of a listener interface I Essentially the structure looks like: interface I { void ...
0votes
1answer
622views
Name of this enum-based design pattern to get the type
I have been using a pattern in a lot of places (mainly C#) that I would like to know the name of. Here is an example of it in C#: public enum ThingType { A, B, C } public interface ...
- 111
1vote
1answer
118views
Can this simple Bank example be considered as a valid Abstract Factory?
For teaching purposes, I'm trying to replicate in a more faithful way from this conceptual UML (from wikipedia): In a "so-so" real world example, in my case, families of Loans and Insurances: So, can ...
- 253
5votes
4answers
2kviews
Do we really need interface classes for the dependency inversion principle?
As a practical example, imagine a Gripper class which represents a robotic gripper in a simulation. Gripper has a TryGrip method, which checks if there's a GrippableItem in the correct position (...
- 205
