Singleton Pattern In Swift

Learn one of the most used and misused design pattern

Alessandro Manilii
5 min readMay 12, 2023
Image by Lukas: https://www.pexels.com/it-it/foto/colpo-a-macroistruzione-del-fiore-bianco-669508/

In the world of software development, design patterns provide a blueprint for solving common problems and improving code organization. One such pattern that is frequently utilized in Swift applications is the Singleton pattern.

The Singleton pattern ensures that one and only one instance of a class exists throughout the application, providing global access to that instance. In this article, we will explore the Singleton pattern in Swift and its significance in managing global instances effectively.

Understanding the Singleton Pattern

The Singleton pattern is categorized as a creational design pattern, focusing on how objects are created. Its primary objective is to restrict the instantiation of a class to a single object. This pattern is particularly useful when there is a need for a shared resource or a centralized point of control within an application.

In a Singleton pattern, a class is designed to have a private constructor to prevent external instantiation. Instead, it provides a static method or property that allows access to a single instance of the class. The first time this method or property is called, it creates an instance of the class and returns it. On subsequent calls…

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Alessandro Manilii

I’m an Italian professional iOS Developer, iOS Tech Lead at Wakala — Join Medium from the following link: https://medium.com/@alessandromanilii/membership