Learning Elixir: Keyword Lists
New article in my Elixir learning series exploring Keyword Lists - the specialized ordered key-value structure that powers Elixir’s clean function APIs and configuration systems.
The article covers:
- Internal structure and syntax variations
- Creating and manipulating keyword lists safely
- Function options and configuration patterns (the primary use case)
- Working with duplicate keys and their semantic value
- Safe extraction patterns (avoiding pattern matching pitfalls)
- Keyword Lists vs Maps - when to choose each
- Validation and documentation patterns
- Best practices for maintainable and idiomatic code
With comprehensive examples, IEx sessions, and practical patterns to help you master this essential Elixir data structure and write more idiomatic function APIs.
Check it out: Learning Elixir: Keyword Lists
