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Get introduced to the concept of metaprogramming. Learn how to level up your programming skills by discovering the full potential of the macro system in Elixir. Understand the ins and outs of metaprogramming at a fundamental level and write incredible libraries by doing more with less code.

Metaprogramming in Elixir

## Recreating Elixir’s `unless` macro


Suppose that Elixir lacks a built-in `unless` construct. In most languages, we would have to settle for `if!` expressions and learn to accept this syntactic shortcoming.
Fortunately for us, Elixir isn’t like most languages. 

# Recreating Elixir’s `unless` macro


Suppose that Elixir lacks a built-in `unless` construct. In most languages, we would have to settle for `if!` expressions and learn to accept this syntactic shortcoming.
Fortunately for us, Elixir isn’t like most languages. 

Learn to build custom language features using macros.

Introduction

The Language of Macros

Extending Elixir with Metaprogramming

Advanced Compile-Time Code Generation

Code Generation from Git API

How to Test Macros

Create an HTML Domain-Specific Language

With Great Power Comes Great Responsibility (and Fun!)

Macros: The Building Blocks

Recreating Elixir’s `unless` macro