What is a Singleton Class?

The Singleton paradigm denotes a class instantiation restricted to a singular occurrence across the entire application. It establishes a global access point allowing all objects to connect with it. Such a pattern is preferred for shared resources, enabling a sole entry point, thus minimizing resource creation redundancies.

Benefits of Singleton Class

• Provides a single point of access to shared resources.
• Ensures that these resources are not created unnecessarily.
• Can improve performance by reducing memory allocation.

Objective-C serves as a programming language widely employed to construct applications intended for both macOS and iOS. Among the many design patterns that find extensive usage in Objective-C, the Singleton pattern proves quite noteworthy. A Singleton represents a class in that instantiation remains restricted to a single instance throughout the entire application. In this discourse, we delve into the Singleton pattern and its implementation in Objective-C.