Top "Singleton" questions

A design pattern that ensures that exactly one application-wide instance of a particular class exists.

Python and the Singleton Pattern

There seem to be many ways to define singletons in Python. Is there a consensus opinion on Stack Overflow?

python design-patterns singleton
Singleton design pattern vs Singleton beans in Spring container

As we all know we have beans as singleton by default in Spring container and if we have a web …

java spring singleton containers
Implementing Singleton with an Enum (in Java)

I have read that it is possible to implement Singleton in Java using an Enum such as: public enum MySingleton { …

java design-patterns enums singleton
Thread Safe C# Singleton Pattern

I have some questions regarding the the singleton pattern as documented here: http://msdn.microsoft.com/en-us/library/ff650316.aspx …

c# design-patterns singleton
Java Singleton and Synchronization

Please clarify my queries regarding Singleton and Multithreading: What is the best way to implement Singleton in Java, in a …

java multithreading synchronization singleton
How to define Singleton in TypeScript

What is the best and most convenient way to implement a Singleton pattern for a class in TypeScript? (Both with …

singleton typescript
Can any one provide me a sample of Singleton in c++?

I write a singleton c++ in the follow way: class A { private: static A* m_pA; A(); virtual ~A(); public: …

c++ design-patterns singleton
Create singleton using GCD's dispatch_once in Objective-C

If you can target iOS 4.0 or above Using GCD, is it the best way to create singleton in Objective-C (thread …

ios objective-c singleton grand-central-dispatch
How do you build a Singleton in Dart?

The singleton pattern ensures only one instance of a class is ever created. How do I build this in Dart?

dart singleton
How do I implement an Objective-C singleton that is compatible with ARC?

How do I convert (or create) a singleton class that compiles and behaves correctly when using automatic reference counting (ARC) …

objective-c ios singleton automatic-ref-counting