All Questions
13 questions
0
votes
2
answers
469
views
Is it considered a code smell to not delete static pointers of a singleton?
I have a singleton that needs to be initialized at the start of the program and it will live on until the end of the program. As is usual in this pattern, a function initializing the singleton creates ...
- 231
1
vote
4
answers
913
views
Should I use a singleton to represent the application as a whole?
I make sure when designing software/firmware to make heavy use of dependency injection so that different pieces of the application are not directly coupled to one another. This also allows me to (...
- 789
-2
votes
3
answers
827
views
Singleton as Interface for testability via dependancy injection
It can be found in many advices on topic that having Singletons is an anti-pattern. Especially for cases of testability. Can someone please advice/critique on this way (please see code below) of ...
- 101
1
vote
2
answers
2k
views
Best way to access (grand grand) parent element in gui
I'm creating a multi window gui program, in c++ with Qt Widgets. I do have many custom gui elements, which usually are c++ classes inherited from QWidget or other Qt elements. When foo is the main ...
- 129
-2
votes
1
answer
235
views
Improve design with singleton pattern
I want to create a media management tool, for which I try to draw an appropriate UML class diagram. The tool shall hold a collection of different media types (movies, music, etc.) which inherit from a ...
- 121
1
vote
2
answers
482
views
Overhead of using big singleton with all files includes
I have several subsystem managers for various uses, for example:
AudioManager
CollisionManager
InputManager
etc.
At first I wanted them to be all singletons, however now want to make the ...
- 201
-1
votes
4
answers
135
views
Base global system for two customizable subcomponents
The following explanation is rather detailed, but I think if I simplified the problem at hand no proper answer could be given.
I'm working on a scripting system for a game (for end users rather than ...
- 1
-2
votes
2
answers
1k
views
C++ Which of the following is a better singleton pattern approach?
I'm now stuck in the server I am programming, simply because I do not seem to find a good and realiable way to handle my "single object" classes, I've attempted the Singleton pattern but it is just ...
- 101
3
votes
2
answers
2k
views
Difference between Singleton pattern and auto_ptr<> resp. unique_ptr<>
I'm maintaining some legacy code of a physical simulation. The calculation object is build as a singleton, to ensure there is only one instance. A co-worker told me, that singleton are completely out-...
- 51
6
votes
4
answers
4k
views
Is there something like a polymorphic Singleton?
I have a resource loader object that loads objects from the disk or from a ZIP archive, depending on the platform.
It has state (e.g. the path to the directory or the ZIP archive, and possibly some ...
- 2,185
0
votes
5
answers
2k
views
should singleton be life-time available or should it be destroyable?
Should the singleton be designed so that it can be created and destroyed at any time in program or should it be created so that it is available in life-time of program. Which one is best practice? ...
- 4,056
12
votes
7
answers
17k
views
What are the roles of singletons, abstract classes and interfaces?
I am studying OOP in C++ and, even though I am aware of the definitions of these 3 concepts, I cannot really realize when or how to use it.
Let's use this class for the example:
class Person{
...
- 353
7
votes
4
answers
4k
views
C++ - Best way to have a central data repository
I'm coding in C++. I have a server that will have clients connect to it, and each client gets spun off into its own thread for communication. This server is hosting a game, so there is information ...
- 173