What is the purpose of using NSObject?

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NSObject is the root or base class of most Objective-C classes. The purpose of using NSObject is to inherit its basic behavior and get access to its built-in methods and properties, such as memory management, object initialization, and introspection. NSObject provides a common interface for all objects in Objective-C and ensures that objects can interact with each other. It also enables objects to use the messaging system of Objective-C, allowing them to communicate with other objects and call each other's methods. Ultimately, NSObject is the backbone of the language and essential for creating robust and reliable applications.