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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re: Boost your Productiveness with RegEx (a little) VIEW POST
TOP OF THREAD FULL DISCUSSIONI'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