1. Type Safety: Swift is a type safe language, which means that every variable must be declared with a specific type. For example, if you create a variable called “name” and set it to a string value, it will always remain a string.
2. Speed: Swift is significantly faster than Objective-C, and it can run up to 2.6x faster than Objective-C.
3. Memory Management: Swift uses Automatic Reference Counting (ARC) to manage memory usage. This means that developers don’t have to manually manage memory usage, which can be a tedious and error-prone task.
4. Closures: Closures are a powerful feature of Swift, which allow developers to create self-contained blocks of code that can be passed around and used in various ways. For example, a closure can be used to create a custom sorting algorithm for an array.
5. Optionals: Optionals are a powerful feature of Swift that allow developers to handle the absence of a value. For example, if you are trying to access an element in an array, you can use an optional to determine whether or not the element exists.