Singleton Pattern
Learn about the singleton pattern along with its structure, participants, and use cases.
We'll cover the following...
Purpose
Sometimes a class only needs to have one pointer. For example, a system should only have one printer spooler, even though there may be several printers. Similarly, we can have multiple users on a website, but we don’t create a new server for every user. The server remains a singleton.
How can we make sure a class only has one instance and is easily accessible? To ensure that we can’t make multiple class objects, we make its constructor private. This means we won’t be able to create an object for the ...