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 …

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 …

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 …

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

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 …

The glorified global variable - becomes a gloried global class. Some say breaking object-oriented design. Give me scenarios, other than the good old logger where it makes sense to use the …

Jun 17, 2012 · What is the preferred way to work with Singleton class in multithreaded environment? Suppose if I have 3 threads, and all of them try to access getInstance() method …

Sep 16, 2008 · This is useful when your singleton needs to inherit from a superclass. You cannot use the enum singleton pattern in this case, since enums cannot have a superclass (they can …

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

Jul 1, 2016 · Singleton objects are the same for every object and every request. For more clarification, this example from .NET documentation shows the difference: To demonstrate the …