What Is Swift And Objective C

Swift Programming

Swift and Objective-C are both programming languages commonly used in the development of iOS and macOS applications. As a software developer with experience in both languages, I can personally attest to their unique characteristics and strengths. In this article, I will provide an in-depth overview of Swift and Objective-C, highlighting their key features and offering my personal insights along the way.


Objective-C has been the primary programming language for iOS and macOS development for many years. It was introduced by Apple in the early 1980s and has since played a crucial role in building the foundation of Apple’s software ecosystem. In fact, many of the popular frameworks and libraries used in iOS and macOS development are written in Objective-C.

One of the distinguishing features of Objective-C is its dynamic nature. It allows for dynamic method dispatch and dynamic typing, making it incredibly flexible and powerful. This flexibility enables developers to write highly dynamic and expressive code, but it can also introduce some complexity and potential pitfalls.

Objective-C uses square brackets to send messages to objects and has its own syntax for defining classes and methods. It follows a more verbose and explicit coding style compared to some other programming languages. While the syntax may take some time to get used to, it provides a clear and readable structure to the codebase, making it easier to understand and maintain.

Objective-C also has a rich set of runtime features, such as method swizzling and introspection, which allow for advanced manipulation of objects at runtime. These features can be incredibly useful in certain scenarios, but they also require a deep understanding of the language and its runtime environment.


Swift, on the other hand, is a relatively new programming language introduced by Apple in 2014. It was designed to address some of the limitations and complexities of Objective-C while providing a modern and safe programming environment. Since its release, Swift has gained significant popularity among developers and has quickly become the language of choice for iOS and macOS development.

One of the standout features of Swift is its emphasis on safety and reliability. The language includes a range of built-in safety features, such as optionals, type inference, and automatic memory management. These features help to prevent common programming errors and make it easier to write robust and bug-free code.

Swift also introduces a more concise and expressive syntax compared to Objective-C. It uses dot notation for method calls, employs type inference to reduce the need for explicit type annotations, and provides powerful language constructs like closures and generics. These features contribute to a more modern and enjoyable programming experience.

Additionally, Swift has a strong focus on performance. The compiler is highly optimized, and the language includes features like value types and copy-on-write semantics to minimize memory overhead and improve execution speed. This makes Swift an ideal choice for building high-performance applications.


In conclusion, both Swift and Objective-C have their own unique characteristics and strengths. Objective-C, with its dynamic nature and rich runtime features, has been the backbone of iOS and macOS development for many years. On the other hand, Swift offers a modern and safer programming environment with a focus on performance and readability.

As a software developer, I have thoroughly enjoyed working with both languages. While Objective-C carries the legacy and familiarity, Swift has brought a breath of fresh air with its modern syntax and powerful features. Whether you choose to stick with the familiarity of Objective-C or embrace the modernity of Swift, both languages provide powerful tools for iOS and macOS development.