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4 questions
15
votes
4
answers
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views
Singleton or instantiate everytime I use? [duplicate]
I use a class that just extracts data from one known object, and distributes it to other known objects. No persistent configuration or such is needed in that class instance.
How should I decide ...
- 361
38
votes
3
answers
75k
views
When to use a Singleton and when to use a static class [duplicate]
I've searched about this here and on StackOverflow and found some differences between the two.
But I'm still not sure in what cases one would prefer a Singleton, and in what cases one would choose to ...
- 21.5k
-1
votes
1
answer
2k
views
What is the difference between class level attributes, Class constants and singleton methods?
What the difference given they all exist 'once per class'.
When should I use one over another, i.e. for what purpose?
I use Ruby.
- 13.3k
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{
...
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