больной человек

For cleverness sure but is this actually best practice? I rather have a simple function with clear checks than complicated regex not everyone understand in my codebase.

Regular expressions are never easy to read. It doesn't mean we can't use them.

Well done. I think you can improve this beautiful regex by replacing the capture groups with non capture groups () => (?:). You dont need to store the matches and use them later.

I wish I had these regex skillz.

Gotta love the power of Regex!!

Savage MOVE!

For what it's worth, I don't think the author of this solution thinks this is best practice. I assume they just wanted to write it as one regex.

This is clever but certainly not best practice. For me, best practice means easy to read and understand.

so..how about 24[0-9],here only get 25[0-5]

I just try '010.013.037.01', the regex return false.
In the description, '010.013.037.01' expect return false too.

Learned something new ... bravo!

Savage