Trait Variance
trait Variance: sealed::Sealed + DefaultA marker trait for phantom variance types.
Implementors
impl Variance for PhantomInvariantLifetime<'_>impl Variance for PhantomContravariantLifetime<'_>impl Variance for PhantomCovariantLifetime<'_>impl<T> Variance for PhantomInvariant<T>impl<T> Variance for PhantomContravariant<T>impl<T> Variance for PhantomCovariant<T>