is everything in rust's std implemented in rust? I don't mean in the metacircular sense, I mean could they be written and compiled by an end user
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It's all pure rust, but some stuff is not actually used and only there for the type system. E.g. impl Add<i32> for i32 { type Output = i32; fn add(self, other: i32) -> i32 { self + other } } Would recurse infinitely if actually used
