Apr 9, 2009 · The only real world application of singletons I've ever seen has been "an architect has read the GoF book, and decided to cram design patterns in everywhere.", or "some programmer …

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 …

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 singleton.

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

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 …

I've heard recently that Singleton is an anti-pattern. I know it has to do with the fact making a class singleton is like making that unique instance a global variable, but it's also doing a lot more than that …

Jun 10, 2020 · This question is not for the discussion of whether or not the singleton design pattern is desirable, is an anti-pattern, or for any religious wars, but to discuss how this pattern is best …

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 implement …

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

If you want to verify what gets logged in a test, you need dependency injection. Furthermore, a logger is rarely a singleton - generally you have a logger per each of your class. Watch this presentation on …