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Introduction

Getting Started Course Overview

The Language of Macros

Introduction to Metaprogramming Tying AST and Macros Together The Abstract Syntax Tree Macros: The Building Blocks Code Injection and the Caller’s Context Try It Out Try It Out: Solution Test Your Knowledge!

Extending Elixir with Metaprogramming

Custom Language Constructs Smarter Testing with Macros Leveraging the Virtual Machine’s Pattern Matching Engine Extending Modules Using Module Attributes for Code Generation Compile-Time Hooks Try It Out Try It Out: Solution Test Your Knowledge!

Advanced Compile-Time Code Generation

Generating Functions from External data MIME-Type Conversion Building an Internationalization Library Finalize Building Our Internationalization Library The Complete Translator Module Introduction to Macro.escape Code Generation from Remote APIs Try It Out Try It Out: Solution Test Your Knowledge!

Mini Project

Code Generation from Git API

How to Test Macros

Setting Up Your Test Suite Deciding What to Test Integration Testing Unit Tests Test Simple and Test Fast Test Your Knowledge!

Create an HTML Domain-Specific Language

Getting Domain Specific Defining Minimum Viable API Keeping State With Elixir Agents Supporting the Entire HTML Spec with Macros Enhancing API with HTML Attribute Support Generating Less Code by Walking the AST To DSL or Not to DSL?Try It Out Try It Out: Solution Test Your Knowledge!

With Great Power Comes Great Responsibility (and Fun!)

When and Where to Use Macros

Avoiding Common Pitfalls

Kernel.SpecialForms: Know the Environment and Limitations

Bending the Rules

Build the Future!

Test Your Knowledge!

Metaprogramming in Elixir

When and Where to Use Macros

Learn the tips and tricks for the correct use of macros.

We'll cover the following...

The trial terminal
The correct use of macros

We’ve unlocked many of Elixir’s metaprogramming secrets. We went from the basics to writing our own language features. Along the way, we gained insight into Elixir’s internals and probably found a new appreciation for the language’s syntax and ...