Struct dharitri_wasm::storage::mappers::MapMapper

pub struct MapMapper<SA, K, V>
where
    SA: StorageReadApi + StorageWriteApi + ManagedTypeApi + ErrorApi + Clone + 'static,
    K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static,
    V: TopEncode + TopDecode + 'static,
{ /* private fields */ }

Implementations

impl<SA, K, V> MapMapper<SA, K, V>

where SA: StorageReadApi + StorageWriteApi + ManagedTypeApi + ErrorApi + Clone + 'static, K: TopEncode + TopDecode + NestedEncode + NestedDecode, V: TopEncode + TopDecode,

pub fn is_empty(&self) -> bool

Returns true if the map contains no elements.

pub fn len(&self) -> usize

Returns the number of elements in the map.

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

Returns true if the map contains a value for the specified key.

pub fn entry(&mut self, key: K) -> Entry<'_, SA, K, V>

Gets the given key’s corresponding entry in the map for in-place manipulation.

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

Gets a reference to the value in the entry.

pub fn insert(&mut self, k: K, v: V) -> Option<V>

Sets the value of the entry, and returns the entry’s old value.

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

Takes the value out of the entry, and returns it.

pub fn keys(&self) -> Iter<'_, SA, K>

An iterator visiting all keys in arbitrary order. The iterator element type is &'a K.

pub fn values(&self) -> Values<'_, SA, K, V>

An iterator visiting all values in arbitrary order. The iterator element type is &'a V.

pub fn iter(&self) -> Iter<'_, SA, K, V>

An iterator visiting all key-value pairs in arbitrary order. The iterator element type is (&'a K, &'a V).

Trait Implementations

impl<SA, K, V> StorageClearable for MapMapper<SA, K, V>

where SA: StorageReadApi + StorageWriteApi + ManagedTypeApi + ErrorApi + Clone + 'static, K: TopEncode + TopDecode + NestedEncode + NestedDecode, V: TopEncode + TopDecode,

fn clear(&mut self)

Clears all the entries owned by the storage.

impl<SA, K, V> StorageMapper<SA> for MapMapper<SA, K, V>

where SA: StorageReadApi + StorageWriteApi + ManagedTypeApi + ErrorApi + Clone + 'static, K: TopEncode + TopDecode + NestedEncode + NestedDecode, V: TopEncode + TopDecode,

fn new(api: SA, base_key: StorageKey<SA>) -> Self

Will be called automatically by the #[storage_mapper] annotation generated code.