Portable standard library for OCaml

Core is an industrial-strength alternative to the OCaml standard library. It was developed by Jane Street, which is the largest industrial user of OCaml. Core works with Javascript. It provides an overlay on the usual namespace, so the best way to use it is to start your file with:

open! Core

Relationship to Core and Base

In sum:

• Base: Minimal stdlib replacement. Portable and lightweight and intended to be highly stable.

• Core: Extension of Base. More fully featured, with more code and dependencies, and APIs that evolve more quickly. Portable, and works on Javascript.

Many of Core's modules are extensions of modules in Base, where the Core version adds bin_io support or locks in an API with Stable. Some modules, like Core.Map, extend their Base equivalents to follow Core conventions for the use of comparators.

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Please report bugs and feature requests on GitHub. For everything else you can contact us at opensource-contacts@janestreet.com.

You can find all of Jane Street's open-source libraries on GitHub.

Documentation can be found here.