OCaml · Introductory

Lesson 1 · On the house

Hello OCaml

print_endline, let () =, comments, utop, and ocaml or dune to run.

Lesson 2

Values and types

int, float, string, bool, char; separate float operators; type inference.

Lesson 3

let bindings and functions

let and let ... in, function definitions, currying, and partial application.

Lesson 4

if, match and recursion

if/then/else expressions, recursive functions with let rec, and simple match.

Lesson 5

Lists

List literals, :: cons, pattern matching on lists, and List.map/filter/fold_left.

Lesson 6

Tuples and records

Tuples with fst/snd and destructuring, record types, fields, and with-updates.

Lesson 7

Variants

Sum types with constructors, data on constructors, and exhaustive matching.

Lesson 8

Option instead of null

Some/None, matching options, Option.value, and List.find_opt.

Lesson 9

Imperative features

ref cells, arrays, for and while loops, and sequencing with ;.

Lesson 10

Modules and dune projects

Files as modules, module access with dots, open, and a dune build.