Struct fuel_merkle::common::StorageMap

pub struct StorageMap<Key, Value> { /* private fields */ }

Implementations

impl<Key, Value> StorageMap<Key, Value>

pub fn new() -> Self

Trait Implementations

impl<Key: Debug, Value: Debug> Debug for StorageMap<Key, Value>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<Key, Value> Default for StorageMap<Key, Value>

fn default() -> Self

Returns the “default value” for a type.

impl<Key, Value> Storage<Key, Value> for StorageMap<Key, Value> where
    Key: Eq + Hash + Clone,
    Value: Clone, 

type Error = Infallible

Error implementation of the storage functions

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

Append K->V mapping to the storage.

fn remove(&mut self, key: &Key) -> Result<Option<Value>, Self::Error>

Remove K->V mapping from the storage.

fn get(&self, key: &Key) -> Result<Option<Cow<'_, Value>>, Self::Error>

Retrieve Cow<V> such as K->V.

fn contains_key(&self, key: &Key) -> Result<bool, Self::Error>

Return true if there is a K mapping to a value in the storage.