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. net - What is a singleton in C#? - Stack Overflow 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 development There is a C# implementation "Implementing the Singleton Pattern in C#" covering most of what you need to know - including some good advice regarding thread safety To be honest, It's very rare that you
How do you implement the Singleton design pattern? 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 environment I prefer, when the Singleton pattern is the best pattern to use, to create the instance as a static member of the class
What are the real world applications of the singleton pattern? 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 singleton when you need both of these things And that is rare Globals are generally speaking, bad We tend to avoid them when possible And building your application around the assumption that "if more than
java - How to create a singleton class - Stack Overflow What is the best correct way to create a singleton class in java? One of the implementation I found is using a private constructor and a getInstance() method package singleton; public class Sin
ASP. NET Core initialize singleton after configuring DI What if your singleton service needs to read data from a file or load data from a database and act as cache of that data? It doesn't seem right to do it during the first request (when the service is asked for) but to me this seems like a common situation Moreover those operations are potentially dangerous and can throw exceptions which you would want to catch, log etc what is the best
Singleton pattern in C++ - Stack Overflow I have a question about the singleton pattern I saw two cases concerning the static member in the singleton class First it is an object, like this class CMySingleton { public: static CMySing
What are drawbacks or disadvantages of singleton pattern? 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