Elixir has first-class support for defining custom types and adding type annotations (specs) to functions. There's also a tool that makes it very easy to run di

Elixir has first-class support for defining custom types and adding type annotations (specs) to functions. There's also a tool that makes it very easy to run dialyzer on your code: https://github.com/fishcakez/dialyze https://github.com/fishcakez/dialyze