Swift is a high-level general-purpose, multi-paradigm, compiled programming language. Swift compiles to machine code, as it is an LLVM-based compiler. Swift 5.9 introduces the new consume operator, which helps developers manage resource lifetimes more effectively. This operator allows developers to explicitly transfer ownership of a resource, ensuring that it is properly deallocated when no longer needed.

Swift 5.9 takes debugging to the next level with several improvements to LLDB, the debugger for Swift. With the help of Just-in-time debugging developers can now trigger the debugger at specific points in their code, making it easier to identify and fix bugs. Developers can now use Swift to build native Windows applications using the new Windows Driver Kit (WDK) and enjoy access to a vast array of platform-specific APIs.