F* (programming language)

F* (pronounced F star) is a functional programming language inspired by ML and aimed at program verification. 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 SMT solving and manual proofs. Programs written in F* can be translated to OCaml, F#, and C for execution. Previous versions of F* could also be translated to JavaScript.

Not to be confused with F (programming language).
F*
ParadigmMulti-paradigm: functional, imperative
Designed byMicrosoft Research and Inria[1]
Stable release
Typing disciplineDependent, inferred, static, strong
OSLinux, macOS, Windows
LicenseApache License 2.0
Websitewww.fstar-lang.org
Influenced by
Coq, Dafny, F#, Lean, OCaml, Standard ML

It was introduced in 2011[2][3] and is under active development on GitHub.[4]

History

Versions

Up until version 2022.03.24 F* was written entirely in a common subset of F* and F# and supported bootstrapping in both OCaml and F#. This was dropped beginning in version 2022.04.02.[5][6]

References
  1. "Microsoft Research Inria Joint Centre". MSR-INRIA.
  2. Swamy, Nikhil; Chen, Juan; Fournet, Cédric; Strub, Pierre-Yves; Bhargavan, Karthikeyan; Yang, Jean (September 2011). Secure distributed programming with value-dependent types. ICFP '11: Proceedings of the 16th ACM SIGPLAN International Conference on Functional Programming. Vol. 46. Tokyo, Japan: Association for Computing Machinery. pp. 266–278. doi:10.1145/2034574.2034811. Retrieved 17 April 2023.
  3. "The F* Project". Microsoft. Retrieved 20 April 2023.
  4. "FStarLang/FStar". GitHub. Retrieved 17 April 2023.
  5. "fstar.exe is no longer buildable in F# as a .NET executable #2512". Github. Retrieved 17 April 2023.
  6. "Consider dropping requirement that F* code has to be valid F# #1737". Github. Retrieved 17 April 2023.

Sources
  • Ahman, Danel; Hriţcu, Cătălin; Maillard, Kenji; Martínez, Guido; Plotkin, Gordon; Protzenko, Jonathan; Rastogi, Aseem; Swamy, Nikhil (2017). "Dijkstra Monads for Free". 44nd ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages.
  • Swamy, Nikhil; Hriţcu, Cătălin; Keller, Chantal; Rastogi, Aseem; Delignat-Lavaud, Antoine; Forest, Simon; Bhargavan, Karthikeyan; Fournet, Cédric; Strub, Pierre-Yves; Kohlweiss, Markulf; Zinzindohoue, Jean-Karim; Zanella-Béguelin, Santiago (2016). "Dependent Types and Multi-Monadic Effects in F*". 43nd ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages.
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