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rescue nil swallows any exception a statement raises and substitutes nil. One line, no error class, no logging — the failure simply disappears. It's Ruby at its most permissive: co nvenient for a quick guard against a value that might not be there, and quietly dangerous everywhere else, since it hides the difference between an expected miss and a real bug. Most Rubyists write it at least once. Most learn to be specific about what they're rescuing soon after. Show more