Odometex, simple distance comparisons Juice - Reduce in memory data structures using a lightweight query language

How to implement your own :timer.sleep in Elixir

https://minhajuddin.com/2018/05/11/how-to-implement-your-own-timer-sleep-in-elixir/ a small fun exercise.

Shameless plug: Check out @elixirstatus' other community project:

Credo, a new static code analysis tool that acts as a code linter, but also focusses on teaching coding practices and code consistency.