dbuenzli/affect

---

dbuenzli/affect.json

{
  "createdAt": "2022-02-28T23:17:32Z",
  "defaultBranch": "master",
  "description": "Composable concurrency primitives with OCaml effects handlers (unreleased)",
  "fullName": "dbuenzli/affect",
  "homepage": "https://erratique.ch/software/affect",
  "language": "OCaml",
  "name": "affect",
  "pushedAt": "2024-10-06T23:32:21Z",
  "stargazersCount": 43,
  "topics": [],
  "updatedAt": "2024-11-04T23:38:42Z",
  "url": "https://github.com/dbuenzli/affect"
}

Affect — Concurrency and parallelism for OCaml 5

Affect is a streamlined and natural [concurrency model] for OCaml 5. It just provides parallel asynchronous function calls with structured cooperative concurrency and cancellation.

Affect is distributed under the ISC license. It has no dependencies.

Homepage: https://erratique.ch/software/affect

[concurrency model] !: https://erratique.ch/software/affect/doc/Fiber/index.html#concurrency_model

Installation

Affect can be installed with opam:

opam pin add affect https://erratique.ch/repos/affect.git

If you don’t use opam consult the [opam]!(opam) file for build instructions.

Documentation

The documentation can be consulted [online][doc] or via odig doc affect.

Questions are welcome but better asked on the [OCaml forum][ocaml-forum] than on the issue tracker.

[doc] !: https://erratique.ch/software/affect/doc/ [ocaml-forum] !: https://discuss.ocaml.org/

Sample code

A few basic sample programs can be found in the [test]!(test/) directory.

• [ping.ml]!(test/ping.ml), client and server using Funix to do useless networking on your machine.
• [mouse.ml]!(test/mouse.ml), proof of concept interfacing with the SDL event loop.
• [happy_eyeballs.ml]!(test/happy_eyeballs.ml), an implementation of a happy eyeballs

You can run them with b0 -- ping or b0 -- mouse.