#regex

What does this do? I copied it from a Stack Overflow answer and I’m scared of it. [code]

It’s a password rule, and it’s less scary than it looks. Read it as three bouncers standing at a door: (?=.[A-Z]) — Bouncer 1 peeks down the whole line and asks “is there at least one capit…

Give me one regex that catches most API keys so I can warn myself before pasting logs into an AI chat.

One regex that catches the common prefixed formats: [code] That covers OpenAI/Anthropic-style sk-…, AWS access keys, GitHub tokens, Slack tokens, Google API keys, Stripe keys and JWTs. Now …