Struct pstd::collections::btree_map::CursorMutKey

pub struct CursorMutKey<'a, K, V, A: Tuning> { /* private fields */ }

Cursor that allows mutation of map keys, returned by CursorMut::with_mutable_key.

Implementations

impl<'a, K, V, A: Tuning> CursorMutKey<'a, K, V, A>

pub fn insert_before( &mut self, key: K, value: V ) -> Result<(), UnorderedKeyError>

where K: Ord,

Insert leaving cursor after newly inserted element.

pub fn insert_after( &mut self, key: K, value: V ) -> Result<(), UnorderedKeyError>

where K: Ord,

Insert leaving cursor before newly inserted element.

pub fn insert_before_unchecked(&mut self, key: K, value: V)

Insert leaving cursor after newly inserted element.

pub fn insert_after_unchecked(&mut self, key: K, value: V)

Insert leaving cursor before newly inserted element.

pub fn remove_prev(&mut self) -> Option<(K, V)>

Remove previous element.

pub fn remove_next(&mut self) -> Option<(K, V)>

Remove next element.

pub fn next(&mut self) -> Option<(&mut K, &mut V)>

Advance the cursor, returns references to the key and value of the element that it moved over.

pub fn prev(&mut self) -> Option<(&mut K, &mut V)>

Move the cursor back, returns references to the key and value of the element that it moved over.

pub fn peek_next(&self) -> Option<(&mut K, &mut V)>

Returns mutable references to the next key/value pair.

pub fn peek_prev(&self) -> Option<(&mut K, &mut V)>

Returns mutable references to the previous key/value pair.

pub fn as_cursor(&self) -> Cursor<'a, K, V, A>

Returns a read-only cursor pointing to the same location as the CursorMutKey.

Trait Implementations

impl<'a, K, V, A: Tuning> Send for CursorMutKey<'a, K, V, A>

impl<'a, K, V, A: Tuning> Sync for CursorMutKey<'a, K, V, A>