The Singleton design pattern is one of the creational design patterns, and it ensures that a class has only one instance throughout the application’s lifetime. This single instance is globally accessible, making it a shared resource for multiple parts of your application. Singleton pattern ensures that only one object is created, and that object is used across the entire application.
The Singleton pattern is typically used in scenarios where you need to control access to shared resources or manage global configuration settings.
Implementing a Singleton in Swift
In Swift, you can implement the Singleton pattern by using a private initializer, a static property, and a private instance variable. Here’s a step-by-step guide on how to create a Singleton in Swift: