ppx_let

Tech stack & purpose

ppx_let is a syntax extension (ppx rewriter) for OCaml that makes monadic and applicative code more readable by allowing developers to write custom binders using familiar let-binding syntax. The project adds new syntactic forms like `let%bind` and `let%map` that expand into calls to `bind` and `map` functions, along with support for match expressions, if expressions, function expressions, and while loops. The extension also supports parallel bindings via the `and` keyword, optimized multi-argument map functions, and advanced features like local-aware and zero-alloc variants for performance-conscious code. ppx_let is built for and used with Jane Street's Core suite of libraries, which provide the required `Let_syntax` modules containing the necessary `bind`, `map`, and `both` functions.

Languages

Contributors

• 
  Xavier Clerc33 commits · 116 followers
• 
  jdimino-js29 commits · 0 followers
• 
  public-release25 commits · 11 followers
• 
  Thomas Refis15 commits · 166 followers
• 
  Arseniy Alekseyev13 commits · 61 followers
• Ashish Agarwal2 commits
• 
  Jakub Staroń1 commits · 16 followers
• 
  David Allsopp1 commits · 168 followers
• 
  Jérémie Dimino1 commits · 5 followers
• Jakub Svec1 commits