pub struct Once;
Implementations§
Trait Implementations§
impl Copy for Once
Auto Trait Implementations§
impl RefUnwindSafe for Once
impl Send for Once
impl Sync for Once
impl Unpin for Once
impl UnwindSafe for Once
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