[−][src]Struct trie_db::Lookup
Trie lookup helper object.
Fields
db: &'a dyn HashDBRef<H, DBValue>
database to query from.
query: Q
Query object to record nodes and transform data.
hash: H::Out
Hash to start at
marker: PhantomData<C>
Methods
impl<'a, H, C, Q> Lookup<'a, H, C, Q> where
H: Hasher,
C: NodeCodec<H>,
Q: Query<H>,
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H: Hasher,
C: NodeCodec<H>,
Q: Query<H>,
pub fn look_up(
self,
key: NibbleSlice
) -> Result<Option<Q::Item>, H::Out, C::Error>
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self,
key: NibbleSlice
) -> Result<Option<Q::Item>, H::Out, C::Error>
Look up the given key. If the value is found, it will be passed to the given function to decode or copy.
Auto Trait Implementations
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,