Jan 28, 2010 · A singleton is a class which only allows one instance of itself to be created - and gives simple, easy access to said instance. The singleton premise is a pattern across software …

Apr 9, 2009 · Simple. What does a singleton do? It provides global access to an instance of an object, and It guarantees that no more than one instance of that type can ever be created. So you use a …

Sep 18, 2008 · So a singleton should be used if and only if, we need both the traits it offers: If we need global access (which is rare, because globals are generally discouraged) and we need to prevent …

The singleton pattern is a fully paid up member of the GoF's patterns book, but it lately seems rather orphaned by the developer world. I still use quite a lot of singletons, especially for factory

One example is if the constructor of the singleton allocates memory from the heap and you wish that allocation to be predictable, for instance in an embedded system or other tightly controlled …

Dec 10, 2009 · The classic of writing a singleton in java is like this: public class SingletonObject { private SingletonObject() { } public static SingletonObject getSingletonObject() { ...

Jun 10, 2020 · A singleton is special because its instance is created only once, and a metaclass is the way you customize the creation of a class, allowing it to behave differently than a normal class.

Jul 1, 2016 · A singleton service is most restrictive in terms of its dependencies, and it should not depend on transient or scoped services, but can depend upon other singleton services. Capture of …

Sep 7, 2012 · 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 …

What is the simplest/cleanest way to implement the singleton pattern in JavaScript?