Jun 28, 2015 · From the dagger 2 Documentation I noticed that you can have a @Singleton annotated class. What is the purpose of marking a class as @Singleton as I have tried to do …

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 …

This implementation is: static Singleton& instance() { static Singleton s; return s; } I understand how this is thread safe from other questions here on SO, but what I don't understand is how …

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 …

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 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

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 …

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

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 …

Jun 28, 2011 · What is the best way in Java to create a singleton? Should a DB connection be a singleton (being a singleton it's automatically thread-safe)? Because theoretical the DB can't …