Objective-C, a programming language developed by Apple, has been historically significant for iOS and macOS app development. While its usage has decreased in recent years in favor of Swift, Objective-C still holds relevance, and there are advantages associated with using it. Here are some advantages of Objective-C: Compatibility Objective-C is compatible with C, allowing developers to use both Objective-C and C code in the same project. This compatibility is valuable for leveraging existing C libraries and integrating low-level functionality. Mature and Stable Objective-C has been around for a long time and has a mature and stable codebase. Many successful iOS and macOS applications have been built using Objective-C, showcasing its reliability. Large Codebase and Community Objective-C has a vast codebase and a well-established developer community. This means a wealth of resources, libraries, and third-party tools are available for developers, making it easier to find solutions to common challenges. Legacy Code and Projects Many existing iOS and macOS projects were initially written in Objective-C. For developers working on legacy projects or maintaining older applications, knowledge of Objective-C is essential. Easy Integration with C and C++ Objective-C can easily integrate with C and C++, allowing developers to combine the strengths of these languages. This is particularly useful when working on projects that involve interfacing with low-level system components or utilizing existing C/C++ libraries. Dynamic Runtime Objective-C has a dynamic runtime, which means it can perform tasks like method swizzling and dynamic message passing at runtime. This flexibility allows for powerful runtime manipulation and introspection. Message Passing and Smalltalk Influence Objective-C's message-passing syntax and its Smalltalk-inspired features provide a unique programming paradigm. This can be advantageous for developers who appreciate the expressiveness and dynamic nature of Smalltalk. Proven Track Record Objective-C has a proven track record of success, having been the primary language for iOS app development before the introduction of Swift. Many well-established and popular apps, including those built by Apple, were written in Objective-C. Objective-C++ Hybridization Objective-C++ allows developers to use both Objective-C and C++ in the same codebase. This is beneficial when working on projects that involve components written in C++ or when transitioning from C++ to Objective-C. Cocoa and Cocoa Touch Frameworks Objective-C seamlessly integrates with the Cocoa and Cocoa Touch frameworks, which provide a rich set of APIs for developing applications on macOS and iOS, respectively. These frameworks are robust and offer a high level of abstraction. Learning Curve for C Developers Developers familiar with C can find the learning curve for Objective-C to be relatively smooth. The combination of C syntax and Smalltalk-style messaging makes it approachable for those with C language experience. While Objective-C continues to have its merits, it's worth noting that Apple has introduced Swift as its preferred language for iOS and macOS development. Swift addresses some of the limitations of Objective-C, offering modern language features, improved safety, and enhanced performance. Depending on the project requirements and context, developers may choose between Objective-C and Swift for their iOS and macOS applications.