Enum Entry 

pub enum Entry<'a, K, V>
where
    K: Copy + Ord,
{
    Occupied(OccupiedEntry<'a, K, V>),
    Vacant(VacantEntry<'a, K, V>),
}

Same as std::collections::btree_map::Entry.

Variants

Occupied(OccupiedEntry<'a, K, V>)

Vacant(VacantEntry<'a, K, V>)

Implementations

impl<'a, K, V> Entry<'a, K, V>

where K: Copy + Ord,

pub fn or_insert(self, default: V) -> Result<&'a mut V, OutOfMemory>

Same as std::collections::btree_map::Entry::or_insert but returns an error on allocation failure.

pub fn or_insert_with<F>(self, default: F) -> Result<&'a mut V, OutOfMemory>

where F: FnOnce() -> V,

Same as std::collections::btree_map::Entry::or_insert_with but returns an error on allocation failure.

pub fn or_insert_with_key<F>(self, default: F) -> Result<&'a mut V, OutOfMemory>

where F: FnOnce(K) -> V,

Same as std::collections::btree_map::Entry::or_insert_with_key but returns an error on allocation failure.

pub fn key(&self) -> K

Same as std::collections::btree_map::Entry::key.

pub fn and_modify<F>(self, f: F) -> Self

where F: FnOnce(&mut V),

Same as std::collections::btree_map::Entry::and_modify.

pub fn insert_entry( self, value: V, ) -> Result<OccupiedEntry<'a, K, V>, OutOfMemory>

Same as std::collections::btree_map::Entry::and_modify but returns an error on allocation failure.

pub fn or_default(self) -> Result<&'a mut V, OutOfMemory>

where V: Default,

Same as std::collections::btree_map::Entry::or_default but returns an error on allocation failure.