what is carbon-lang fr?

Carbon Language is an experimental programming language being developed by Google as a potential successor to C++. The project addresses a well-known problem in software engineering: C++ is extremely powerful and fast but carries decades of accumulated complexity and difficult-to-fix design choices, while newer languages like Rust, Swift, or Go are much cleaner but require rewriting existing C++ codebases from scratch, an impractical option for projects with millions of lines of existing code. Carbon takes a different approach by prioritizing seamless two-way interoperability with C++: you can call Carbon code from C++ and vice versa, making it possible to migrate an existing codebase gradually, one file or library at a time, without a big-bang rewrite. The language aims to match C++ in performance (it compiles through LLVM, the same infrastructure used by clang), have a gentler learning curve for C++ developers, and introduce modern safety features incrementally. The relationship is analogous to how TypeScript extended JavaScript or Kotlin extended Java. The README is explicit that Carbon is not yet ready for use in production, it is still experimental and actively under development. You can try the current state in a browser-based compiler explorer. The project currently focuses on building the toolchain, which includes the compiler and related tools. Someone interested in this repo today would be a C++ developer, a programming language researcher, or an open-source contributor interested in following or contributing to a novel language design effort. The implementation is written in C++ and uses the LLVM compiler infrastructure as its backend.