Scott McMurray 4d3a31caf0 Add Box<[T; N]>: TryFrom<Vec<T>>
We have `[T; N]: TryFrom<Vec<T>>` and `Box<[T; N]>: TryFrom<Box<[T]>>`, but not the combination.

`vec.into_boxed_slice().try_into()` isn't quite a replacement for this, as that'll reallocate unnecessarily in the error case.

**Insta-stable, so needs an FCP**
2022-09-17 14:15:37 -07:00
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2022-09-17 14:15:37 -07:00