![]() The official F* logo | |
Paradigm | Multi-paradigm: functional, imperative |
---|---|
Family | ML: Caml: OCaml |
Designed by | Nikhil Swamy, Juan Chen, Cédric Fournet, Pierre-Yves Strub, Karthikeyan Bhargavan, Jean Yang |
Developers | Microsoft Research, Inria[1] |
First appeared | 2011 |
Stable release | v2023.09.03[2]
/ 3 September 2023 |
Typing discipline | dependent, inferred, static, strong |
Implementation language | F* |
OS | Cross-platform: Linux, macOS, Windows |
License | Apache 2.0 |
Filename extensions | .fst |
Website | fstar-lang |
Influenced by | |
Coq, Dafny, F#, Lean, OCaml, Standard ML |
F* (pronounced F star) is a high-level, multi-paradigm, functional and object-oriented programming language inspired by the languages ML, Caml, and OCaml, and intended for program verification. It is a joint project of Microsoft Research, and the French Institute for Research in Computer Science and Automation (Inria).[1] Its type system includes dependent types, monadic effects, and refinement types. This allows expressing precise specifications for programs, including functional correctness and security properties. The F* type-checker aims to prove that programs meet their specifications using a combination of satisfiability modulo theories (SMT) solving and manual proofs. For execution, programs written in F* can be translated to OCaml, F#, C, WebAssembly (via KaRaMeL tool), or assembly language (via Vale toolchain). Prior F* versions could also be translated to JavaScript.
It was introduced in 2011.[3][4] and is under active development on GitHub.[2]