Enum erg_compiler::context::Variance
source · [−]pub enum Variance {
Covariant,
Contravariant,
Invariant,
}
Variants
Covariant
Output(T)
Contravariant
Input(T)
Invariant
Trait Implementations
sourceimpl PartialEq<Variance> for Variance
impl PartialEq<Variance> for Variance
impl Copy for Variance
impl Eq for Variance
impl StructuralEq for Variance
impl StructuralPartialEq for Variance
Auto Trait Implementations
impl RefUnwindSafe for Variance
impl Send for Variance
impl Sync for Variance
impl Unpin for Variance
impl UnwindSafe for Variance
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more