Singleton design pattern swift 5 - How to use Singleton

An introduction to the singleton design pattern and common implementations. Singleton are create ways to organize your code that needs to initialize only once and available every where inside application or code. This is very simple, common and easy to use in your project. It initializes your class instance single time only with static property and it will share your class instance globally.

Through this design pattern, the singleton class ensures that it’s only instantiated once, and can provide easy access to the single instance.

Some properties of singleton class

Singletons can implement interfaces
Singletons can be passed as parameters
Singletons can have their instances swapped out (such as for testing purposes)
Singletons can be handled polymorphically, so there may exist multiple implementations

#designpattern #singleton #swift5

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