Learning regex and solving problems from various sources.
Why tho? Because this:
Checkout Running notes and examples here.
- Regex For Noobs (like me!) - An Illustrated Guide - Janmeppe
- Regex Course - Launch School
- Learn Regex The Easy Way - GitHub
- TNW - Javascript regular expressions aren't that daunting — here's how to design your own
- My favorite regex of all time
- Regex that only matches itself
- The Many Uses of Regex