# A look at OCaml 4.08

DevFeed: [A look at OCaml 4.08](<https://devfeed.tech/articles/a-look-at-ocaml-4-08-20144.md>)

Original publisher: [Read original article](<https://blog.janestreet.com/a-look-at-ocaml-4.08/>)

Author: Leo White

Published: 2019-07-12T00:00:00Z

Content type: article

Language: en

Sources: [Jane Street](<https://devfeed.tech/sources/jane-street.md>)

Topics: [OCaml](<https://devfeed.tech/topics/ocaml.md>), [Compiler](<https://devfeed.tech/topics/compiler.md>), [Development](<https://devfeed.tech/topics/development.md>)

Tags: [compiler](<https://devfeed.tech/tags/compiler.md>), [contributors](<https://devfeed.tech/tags/contributors.md>), [development](<https://devfeed.tech/tags/development.md>), [language](<https://devfeed.tech/tags/language.md>), [module](<https://devfeed.tech/tags/module.md>), [ocaml](<https://devfeed.tech/tags/ocaml.md>), [open](<https://devfeed.tech/tags/open.md>), [patterns](<https://devfeed.tech/tags/patterns.md>), [pull-requests](<https://devfeed.tech/tags/pull-requests.md>), [structure](<https://devfeed.tech/tags/structure.md>), [syntax](<https://devfeed.tech/tags/syntax.md>)

## AI overview

A review of the work completed for the OCaml 4.08 release, focusing on Jane Street's plans, compiler contributions, and language features involving GADTs, patterns, module shadowing, and private structure and signature items.

## Source excerpt

Now that OCaml 4.08 has been released, let's have a look at what was accomplished, with a particular focus on how our plans for 4.08 fared. I'll mostly focus on work that we in the Jane Street Tools & Compilers team were involved with, but we are just some of the contributors to the OCaml compiler, and I'll have a quick look at the end of the post at some of the other work that went into 4.08.