Struct AllocBTreeMap 

pub struct AllocBTreeMap<K, V> { /* private fields */ }

A Map implementation based on alloc::collections::BTreeMap.

Implementations

impl<K, V> AllocBTreeMap<K, V>

pub fn with_btree_map(btree_map: BTreeMap<K, V>) -> Self

Creates a new AllocBTreeMap with the given BTreeMap.

pub fn new() -> Self

Creates a new empty AllocBTreeMap.

Trait Implementations

impl<K, V> Default for AllocBTreeMap<K, V>

fn default() -> Self

Returns the “default value” for a type.

impl<K: Ord, V> Map<K, V> for AllocBTreeMap<K, V>

type Error = Infallible

Associated error type.

fn insert(&mut self, key: K, value: V) -> Result<Option<V>, Self::Error>

Inserts a new key/value pair into this map.

fn get(&self, key: &K) -> Option<&V>

Returns an immutable reference to the value associated with the given key.

fn get_mut(&mut self, key: &K) -> Option<&mut V>

Returns a mutable reference to the value associated with the given key.

fn remove(&mut self, key: &K) -> Option<V>

Removes the key/value pair associated with the given key from this map.

fn clear(&mut self) -> Result<(), Self::Error>

Removes all key/value pairs stored in this map.

fn is_empty(&self) -> bool

Returns whether this map is empty.

fn capacity(&self) -> Option<usize>

Returns the number of key/value pairs this map is capable of storing.

fn len(&self) -> usize

Rethrns the number of key/value pairs currently stored in this map.