Objective CAML Tutorial

This website is a set of practical, detailed tutorials for people who want to learn Objective CAML (often known as just "OCaml").

OCaml is a fast, concise and powerful language for application development - but I assume you already knew that, and I also assume you've managed to install it. If not, you can find out more at the main OCaml webpages or at the OCaml Alliance's getting started area.

Foreign language versions are:

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About Objective CAML
Objective Caml - A general purpose high-level programming language Didier Rémy, Xavier Leroy, Pierre Weis INRIA Rocquencourt Abstract: Objective Caml is a general purpose programming language that combines functional, imperative,...
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Tutorials

The Basics - If you are new to OCaml or functional programming, read this first.
The Structure of OCaml Programs
Data Types and Matching
Null Pointers, Asserts and Warnings
Functional Programming
Modules
If Statements, Loops and Recursion
Labels
Objects
Garbage Collection
Performance and Profiling
Introduction to Gtk
Calling C libraries
Calling Fortran libraries
Common error messages
OCaml and the Web
Programming style
Standard Library Examples
Compiling OCaml projects
Command-line arguments
File manipulation
Camlp4 3.10
Filenames and extensions
Streams
Stream Expressions

Exercises

External tutorials

Official

The Objective Caml manual which is the official reference for the language and the standard library. It contains also a good introduction to the language.
List of resources at the main OCaml site
Caml FAQ from the old OCaml web site, still very useful
Unix system programming in Objective Caml assumes familiarity with conventional languages

General online tutorials

A short tutorial by David Matuszek
Some other links to learning materials
Jason Hickey's introduction to Objective Caml [PDF, 109 pages]
Didier Rémy's Using, Understanding, and Unraveling the OCaml Language [PDF, 175 pages]
Some OCaml example programs on Jon Harrop's site

Lablgtk (Gtk interface)

LablGTK2 tutorial by SooHyoung Oh

Camlp4 (macro preprocessing)

A great tutorial on camlp4, on how to extend the syntax of OCaml with the Camlp4 standard tool (for ocaml 3.9.* but the basics are similar for the new version of camlp4 shipped with ocaml 3.10.*).

Lex and yacc (writing scanners and parsers)

Ocamllex tutorial and its companion Ocamlyacc tutorial, by SooHyoung Oh.

Calling C libraries (the OCaml FFI)

Florent Monnier's tutorial for writing C wrappers
A post by Hendrik Tews to caml-list points out a few things you want to keep in mind when handling exceptions in C.

Books & magazines

Jon Harrop's OCaml for Scientists book
An introduction to OCaml, from the Linux Gazette.
Introducing OCaml from the OCaml Journal
Jason Hickey will be publishing a book in ~~2008~~ 2009 through Cambridge University Press. There is a variant of this book published by Tim Rentsch, and dispute about the copyright, which you can read on caml-list mailing list.
Le Langage Caml and Manuel de référence du langage Caml which are a French book and reference manual on the Caml Light programming language, an ancestor language of OCaml but with some differences.

OCaml-friendly tools

Manipulating XML documents with CDuce

Community sites

OCamlCore is a community of OCaml users:

OCamlCore planet, collected blogs of OCaml programmers
OCamlCore forge is a development / hosting site for free software projects written in OCaml

The OCaml hump is a list of OCaml libraries and other projects.

Acknowledgements

Here are some of the people who have helped write this tutorial:

Doug Bagley
Nicolas Cannasse
Eric C. Cooper
Richard Donkin
Jim Farrand
Fabrice Le Fessant
Jacques Garrigue
Stephen Gilmore
Flavio Grossi
Damien Guichard
Brian Hurt
Neel Krishnaswami
Michel Levy
Sven Luther
John Gerard Malecki
Luc Maranget
Jean-Francois Monin
Markus Mottl
Thomas Mraz
Wolfgang Mueller
Lars Nilsson
Jose Manuel Nunes
Frederic van der Plancke
Paul Steckler
Fabian Sturm
Ryan Tarpine
Remi Vanicat
Yamagata Yoriyuki
Stefano Zacchiroli

Thanks to them and to all members of caml-list and ocaml-beginners.

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About this wiki

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Objective CAML Tutorial!