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“What is a port?” · “Why is my code erroring?”
Ask me anything about your lessons or your code.
“What is a port?” · “Why is my code erroring?”
A control that stops the bad thing from happening in the first place, such as a locked door, a firewall rule, or requiring two people to approve a payment. Prevention is the cheapest kind when it works and useless once the event is already underway.
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