github.com/apple/swift ↗

About apple/swift

Swift is a high-performance system programming language developed by Apple with a clean, modern syntax designed for both safety and expressiveness. The language features memory safety by default, seamless interoperability with existing C and Objective-C code, and a comprehensive set of capabilities ranging from fundamental flow control and data structures to advanced constructs like protocols, closures, and generics. Unlike C-derived languages, Swift is a complete and independent language that uses a module system, eliminating the need for header files.

This repository contains the official Swift compiler and language implementation. It serves as the central hub for Swift development, offering extensive documentation about the compiler's internal design and architecture. The project maintains comprehensive guides for contributors, including resources for first-time pull requests, frequently asked questions, and detailed getting started instructions for building both the compiler and Swift toolchains. The repository includes build automation scripts like build-toolchain that support various optimization options including distributed compilation with distcc and caching with sccache.

The Swift project emphasizes community engagement and inclusivity, welcoming contributions from developers of all backgrounds and experience levels. The project follows the Contributor Covenant code of conduct and provides clear guidelines for code contributions, testing requirements, and toolchain distribution. Developers can build Swift toolchains for local development, testing, or distribution, with detailed instructions for integrating custom toolchains into Xcode on macOS.