pub enum Presence {
Present,
Missing,
}
Variants
Present
Missing
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Presence
impl Send for Presence
impl Sync for Presence
impl Unpin for Presence
impl UnwindSafe for Presence
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
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