Trait fuel_storage::StorageInspect

pub trait StorageInspect<Type: Mappable> {
    type Error;

    fn get(
        &self,
        key: &Type::Key
    ) -> Result<Option<Cow<'_, Type::GetValue>>, Self::Error>;
    fn contains_key(&self, key: &Type::Key) -> Result<bool, Self::Error>;
}

Base read storage trait for Fuel infrastructure.

Generic should implement Mappable trait with all storage type information.

Required Associated Types

type Error

Required Methods

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

Retrieve Cow<Value> such as Key->Value.

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

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

Implementations on Foreign Types

impl<'a, T: StorageInspect<Type> + ?Sized, Type: Mappable> StorageInspect<Type> for &'a T

type Error = <T as StorageInspect<Type>>::Error

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

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

impl<'a, T: StorageInspect<Type> + ?Sized, Type: Mappable> StorageInspect<Type> for &'a mut T

type Error = <T as StorageInspect<Type>>::Error

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

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

Implementors