Course · 5 lessons ~30 hr Intermediate

Functional Programming Foundations

Functional Programming Foundations covers: Becoming Functional, Learn Functional Programming with Elixir. Rewire your brain from object-oriented to functional thinking — immutability, pure functions, pattern matching, recursion, higher-order functions, and data transformation pipelines. This is the paradigm shift that makes everything else possible.

reading · we frame, you read MIT or the canonical taught · we author, no canonical fits ↺ spirals back to earlier lessons

reflection reading · 8 min

Honest Take — Before You Begin

Honest reflections on the paradigm shift from OOP to FP

preview →

reading · 30 min + ~360 min canonical L1

Becoming Functional: Unlearning Before Learning

Try this thought experiment: could you get through one full day of coding without ever changing a value? No user.update, no total += price, no << onto an array. Not because someon…

primary Elixir School: Basics

after L1 locked

reading · 30 min + ~360 min canonical L1

Learn Functional Programming with Elixir: The Ideas, Now in the Language

Here is the first line of Elixir that tends to convert people:

primary Elixir School: Basics

after L2 locked

exercise reading · 30 min L1

Module Checklist

Work through each item before the checkpoint.

after L3 locked

project reading · 60 min L1

Project: Recursion Katas

Ten katas that are trivial with Enum — and Enum is banned. Fork the template, make the suite green, and feel your Ruby each reflex get rewired into base-case / recursive-case thin…

after L4 locked

5 lessons. Read in order; spiral back when you need to. By the end you'll have used the core ideas twice — once on the abstract, once on something you'll meet at work next week.