I love regular expressions! I was able to circumvent using two whole different APIs by employing some very clever regex string manipulation in one of my projects. The speed improvement is unparalleled.
It depends on the circumstances and requirements but I’d still reply with:
I'd say that regex should be used if they can make a significant difference and you're aware of the scope of the problem being solved by it. That's where Cloudflare went wrong, I'd say. I use it for url formatting so even if it goes wrong, all I get is a 404 hopefully :P
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