pub enum Nullability {
Nullable,
NonNull,
Unknown,
}Variants§
Auto Trait Implementations§
impl Freeze for Nullability
impl RefUnwindSafe for Nullability
impl Send for Nullability
impl Sync for Nullability
impl Unpin for Nullability
impl UnsafeUnpin for Nullability
impl UnwindSafe for Nullability
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more