fn variances_of(tcx: TyCtxt<'_>, item_def_id: DefId) -> &[Variance]ⓘNotable traits for &'_ [u8]impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]
impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]