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by mjmas
271 days ago
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The particular optimisation for non-copying Vec -> IntoIter -> Vec transform is actually hard coded in the standard library as a special case of collecting an Iterator into a Vec. It doesn't rely on the backend for this. Though this optimisation is treated as an implementation detail [1]. [1]: https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#imp... |
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