Struct BigMap 

pub struct BigMap<K: BigMapKey, V> { /* private fields */ }

Auto-incrementing dense map that generates monotone u64-backed typed keys.

Implementations

impl<K: BigMapKey, V> BigMap<K, V>

pub fn new() -> Self

Creates an empty BigMap.

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

Returns a reference to the value for key, or None if not present.

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

Returns a mutable reference to the value for key, or None if not present.

pub fn insert(&mut self, value: V) -> K

Inserts a value and returns its newly generated key. Panics on u64 overflow.

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

Removes and returns the value for key, or None if not present.

pub fn contains_key(&self, key: &K) -> bool

Returns true if the map contains an entry for key.

pub fn iter<'a>( &'a self, ) -> Map<Iter<'a, u64, V>, fn((&'a u64, &'a V)) -> (K, &'a V)>

Returns an iterator over (K, &V) pairs in arbitrary order.

pub fn iter_mut<'a>( &'a mut self, ) -> Map<IterMut<'a, u64, V>, fn((&'a u64, &'a mut V)) -> (K, &'a mut V)>

Returns a mutable iterator over (K, &mut V) pairs in arbitrary order.

pub fn len(&self) -> usize

Returns the number of entries currently in the map.

pub fn is_empty(&self) -> bool

Returns true if the map contains no entries.

Trait Implementations

impl<K: BigMapKey, V> Default for BigMap<K, V>

fn default() -> Self

Returns the “default value” for a type.