Trait bm::ReadBackend

pub trait ReadBackend: Backend {
    fn get(
        &mut self, 
        key: &<Self::Construct as Construct>::Value
    ) -> Result<Option<(<Self::Construct as Construct>::Value, <Self::Construct as Construct>::Value)>, Self::Error>;
}

Read backend.

Required methods

fn get(
    &mut self,
    key: &<Self::Construct as Construct>::Value
) -> Result<Option<(<Self::Construct as Construct>::Value, <Self::Construct as Construct>::Value)>, Self::Error>

Get an internal item by key.

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Implementors

impl<'a, DB: ReadBackend + ?Sized> ReadBackend for ProvingBackend<'a, DB> where
    <DB::Construct as Construct>::Value: Eq + Hash + Ord, 

fn get(
    &mut self,
    key: &<DB::Construct as Construct>::Value
) -> Result<Option<(<DB::Construct as Construct>::Value, <DB::Construct as Construct>::Value)>, Self::Error>

impl<Ba: ReadBackend> ReadBackend for DynBackend<Ba>

fn get(
    &mut self,
    key: &<Self::Construct as Construct>::Value
) -> Result<Option<(<Self::Construct as Construct>::Value, <Self::Construct as Construct>::Value)>, Self::Error>

impl<C: Construct> ReadBackend for InMemoryBackend<C> where
    C::Value: Eq + Hash + Ord, 

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

impl<C: Construct> ReadBackend for NoopBackend<C>

fn get(
    &mut self,
    _key: &C::Value
) -> Result<Option<(C::Value, C::Value)>, Self::Error>

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