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Is it good to use generics for singletons?
Using generics is not useful for singletons. Because you can always create multiple instances of the type parameter T and then it is not by definition a singleton. public class Adapter { public static Adapter Instance => Singleton .Instance; // private Adapter () { } // doesn’t compile. }
How to create a generic singleton class in C #?
Creating a singleton class is just a few lines of code, and with the difficulty of making a generic singleton i always write those lines of code. line removes the need for locking, as a static constructor is thread safe.
Is it better to use a static singleton or a volatile Singleton?
(Incidentally, if you can possibly just use private static volatile Singleton instance = new Singleton () or if you can possibly just not use singletons but use a static class instead, both are better in regards to these concerns). The reason is performance.
What is the Singleton lock pattern in C #?
Performing the lock is terribly expensive when compared to the simple pointer check instance != null. The pattern you see here is called double-checked locking. Its purpose is to avoid the expensive lock operation which is only going to be needed once (when the singleton is first accessed).
How to get an instance of a singleton in Java?
What is more, the new Singleton () value is never assigned to s (thanks @DaveJarvis for noticing this!) This is enough; you can directly use Singleton.INSTANCE to get the instance of the class. public enum Singleton { INSTANCE; public void execute (String arg) { //… perform operation here
Can a singleton class be instantiated or cloned?
A singleton class can not be instantiated neither should it be cloned. To give any class this behavior you will have to make all the constructors private and clone method will have to be overridden to throw an exception. Now if you are going to change all your classes to implement this behavior is your way of creating singleton really generic?