Elixir is a relatively new functional language, which I've taken a deep interest in. I'd like to get general tips about golfing in Elixir and learn techniques that can be applied to code-golf problems that are somewhat specific to Elixir in general.

Since it runs on the Erlang VM (BEAM), tips about the Erlang language (that can work in Elixir code) are also applicable. Post one tip per answer.

Based on so many similar questions about Python, Ruby, Javascript, etc. I'll also try to post tips as I learn more about the language.