Enum btree_experiment::Entry
source · pub enum Entry<'a, K, V> {
Vacant(VacantEntry<'a, K, V>),
Occupied(OccupiedEntry<'a, K, V>),
}
Expand description
Entry in BTreeMap, returned by BTreeMap::entry.
Variants§
Vacant(VacantEntry<'a, K, V>)
Vacant entry - map doesn’t yet contain key.
Occupied(OccupiedEntry<'a, K, V>)
Occupied entry - map already contains key.
Implementations§
source§impl<'a, K, V> Entry<'a, K, V>where
K: Ord,
impl<'a, K, V> Entry<'a, K, V>where
K: Ord,
sourcepub fn or_default(self) -> &'a mut Vwhere
V: Default,
pub fn or_default(self) -> &'a mut Vwhere
V: Default,
Insert default value, returning mutable reference to inserted value.
sourcepub fn or_insert(self, value: V) -> &'a mut V
pub fn or_insert(self, value: V) -> &'a mut V
Insert value, returning mutable reference to inserted value.
sourcepub fn or_insert_with<F>(self, default: F) -> &'a mut Vwhere
F: FnOnce() -> V,
pub fn or_insert_with<F>(self, default: F) -> &'a mut Vwhere
F: FnOnce() -> V,
Insert default value obtained from function, returning mutable reference to inserted value.
sourcepub fn or_insert_with_key<F>(self, default: F) -> &'a mut V
pub fn or_insert_with_key<F>(self, default: F) -> &'a mut V
Insert default value obtained from function called with key, returning mutable reference to inserted value.
sourcepub fn and_modify<F>(self, f: F) -> Entry<'a, K, V>
pub fn and_modify<F>(self, f: F) -> Entry<'a, K, V>
Modify existing value ( if entry is occupied ).
Auto Trait Implementations§
impl<'a, K, V> Freeze for Entry<'a, K, V>where
K: Freeze,
impl<'a, K, V> RefUnwindSafe for Entry<'a, K, V>where
K: RefUnwindSafe,
V: RefUnwindSafe,
impl<'a, K, V> Send for Entry<'a, K, V>
impl<'a, K, V> Sync for Entry<'a, K, V>
impl<'a, K, V> Unpin for Entry<'a, K, V>where
K: Unpin,
impl<'a, K, V> !UnwindSafe for Entry<'a, K, 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