Decades ago, I was a kinda-sometimes programmer. Mostly for personal use in a programming languages called Pascal (followed by Modula-2, C++, Objective-C, Perl, Java, and Rust).

Along the way I picked up a few tools which made programming easier. Editors, outliners, re-compilers, and the rest. One thing that I didn't pick up was learning RegEx (or "regex" if you're boring).

Shorthand for Regular Expressions, this is a tool which allows you to search for text in interesting and helpful ways... then act on what you find. And I don't know why I never looked at it. I had certainly heard of it, but ignored it for forever.

Until I couldn't.

This week I have been working on a difficult work project when I finally ran into a wall. I needed to alter hundreds of occurrences of text which was ever-changing. I had no idea how to do it. I assumed there would be a tool that allowed wildcard functions. And there are some. But none of them could do what I needed to do, and I resigned myself to manually changing everything.

And all of a sudden I remembered RegEx.

The reason I couldn't find a tool which did what I needed was because it had already been invented in the 1950's.

Twenty minutes later, and I had learned what I needed to learn and had completed a task which would have taken hours.

My biggest regret in life is that I didn't learn how to learn RegEx earlier than I did.