pub enum Entry<'a, A: ?Sized + UncheckedAnyExt, V: 'a> {
Occupied(OccupiedEntry<'a, A, V>),
Vacant(VacantEntry<'a, A, V>),
}
Expand description
A view into a single location in an Map
, which may be vacant or occupied.
Variants§
Implementations§
source§impl<'a, A: ?Sized + UncheckedAnyExt, V: IntoBox<A>> Entry<'a, A, V>
impl<'a, A: ?Sized + UncheckedAnyExt, V: IntoBox<A>> Entry<'a, A, V>
sourcepub fn or_insert(self, default: V) -> &'a mut V
pub fn or_insert(self, default: V) -> &'a mut V
Ensures a value is in the entry by inserting the default if empty, and returns a mutable reference to the value in the entry.
sourcepub fn or_insert_with<F: FnOnce() -> V>(self, default: F) -> &'a mut V
pub fn or_insert_with<F: FnOnce() -> V>(self, default: F) -> &'a mut V
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.
source§impl<'a, A: ?Sized + UncheckedAnyExt, V: Default + IntoBox<A>> Entry<'a, A, V>
impl<'a, A: ?Sized + UncheckedAnyExt, V: Default + IntoBox<A>> Entry<'a, A, V>
sourcepub fn or_default(self) -> &'a mut V
pub fn or_default(self) -> &'a mut V
Ensures a value is in the entry by inserting the default value if empty, and returns a mutable reference to the value in the entry.
§Examples
let mut data = AnyMap::new();
{
let r = data.entry::<i32>().or_default();
assert_eq!(r, &mut 0);
*r = 1;
}
assert_eq!(data.get(), Some(&1));
assert_eq!(data.entry::<i32>().or_default(), &mut 1);
Auto Trait Implementations§
impl<'a, A, V> Freeze for Entry<'a, A, V>where
A: ?Sized,
impl<'a, A, V> RefUnwindSafe for Entry<'a, A, V>
impl<'a, A, V> Send for Entry<'a, A, V>
impl<'a, A, V> Sync for Entry<'a, A, V>
impl<'a, A, V> Unpin for Entry<'a, A, V>
impl<'a, A, V> !UnwindSafe for Entry<'a, A, V>
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