Trait bm_le::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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Implementations on Foreign Types

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

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

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

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

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Implementors

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

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

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

fn get(
    &mut self,
    _key: &<C as Construct>::Value
) -> Result<Option<(<C as Construct>::Value, <C as Construct>::Value)>, <NoopBackend<C> as Backend>::Error>

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