An introduction to writing Elixir

Lesson 1 · On the house

Hello, Elixir

iex, IO.puts, .exs scripts.

Lesson 2

Values and types

Integers, floats, atoms, booleans, strings.

Lesson 3

Pattern matching with =

Match operator, pin ^, MatchError.

Lesson 4

Tuples, lists, keyword lists

{a, b}, [h | t], [key: value].

Lesson 5

Maps

%{key => val}, access, update.

Lesson 6

Modules and functions

defmodule, def, defp, arity.

Lesson 7

The pipe operator

|> left-to-right into the first argument.

Lesson 8

cond, case, and if

Control with expressions, not statements.

Lesson 9

Recursion and Enum basics

Enum.map, filter, reduce — and recursive clauses.

Lesson 10

Introductory capstone

A small module combining match, map, pipe, Enum.