since &mut T is not Copy, why is this not an error: fn foo<T>(arg: &mut T) { loop { bar(arg); } } for contrast, this is an error unless a Copy bound is added to T: fn foo<T>(arg: T) { loop { bar(arg); } }
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It's a quality of life thing, code with &mut would get cumbersome otherwise
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haha yeah, when i went looking for some documentation the first thing i found was a niko blog post from 2 years before 1.0 https://smallcultfollowing.com/babysteps/blog/2013/11/20/parameter-coercion-in-rust/#reborrowing …
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Funnily enough the best thing I could find was a reddit post from a few years ago that said this would heavily be documented in the new book. Guess that didn‘t happen afterall.
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