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• 17:18, 22 November 2025 PC talk contribs created page Rust’s Next Superpower: Pattern Types That Kill Useless Runtime Checks (Created page with "500px One job had crashed.
One slice had been empty when it was not supposed to be.
One small assumption had slipped through everything. Nothing exotic. No unsafe. No complex lifetime trick. 
Just a function that took a slice, grabbed the first element, and trusted the caller. Everyone on the team “knew” that slice was never empty.
Someone even wrote it in a comment. The type system did not know that.
So one day, under...")