pub enum Entry<'a, A: ?Sized + UncheckedAnyExt> {
Occupied(OccupiedEntry<'a, A>),
Vacant(VacantEntry<'a, A>),
}
Expand description
A view into a single location in a RawMap
, which may be vacant or
occupied.
Variants§
Implementations§
source§impl<'a, A: ?Sized + UncheckedAnyExt> Entry<'a, A>
impl<'a, A: ?Sized + UncheckedAnyExt> Entry<'a, A>
sourcepub unsafe fn or_insert(self, default: Box<A>) -> &'a mut A
pub unsafe fn or_insert(self, default: Box<A>) -> &'a mut A
Ensures a value is in the entry by inserting the default if empty, and returns a mutable reference to the value in the entry.
§Safety
It is the caller’s responsibility to ensure that the key of the entry
corresponds with the type ID of value
. If they do not, memory
safety may be violated.
sourcepub unsafe fn or_insert_with<F: FnOnce() -> Box<A>>(
self,
default: F,
) -> &'a mut A
pub unsafe fn or_insert_with<F: FnOnce() -> Box<A>>( self, default: F, ) -> &'a mut A
Ensures a value is in the entry by inserting the result of the default function if empty, and returns a mutable reference to the value in the entry.
§Safety
It is the caller’s responsibility to ensure that the key of the entry
corresponds with the type ID of value
. If they do not, memory
safety may be violated.
Auto Trait Implementations§
impl<'a, A> Freeze for Entry<'a, A>where
A: ?Sized,
impl<'a, A> RefUnwindSafe for Entry<'a, A>where
A: RefUnwindSafe + ?Sized,
impl<'a, A> Send for Entry<'a, A>
impl<'a, A> Sync for Entry<'a, A>
impl<'a, A> Unpin for Entry<'a, A>where
A: ?Sized,
impl<'a, A> !UnwindSafe for Entry<'a, A>
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