Struct tari_mmr::MemBackendVec

pub struct MemBackendVec<T> { /* fields omitted */ }

MemBackendVec is a shareable, memory only, vector that can be be used with MmrCache to store checkpoints.

Implementations

impl<T> MemBackendVec<T>

pub fn new() -> Self

Trait Implementations

impl<T: Clone + PartialEq> ArrayLike for MemBackendVec<T>

type Error = MerkleMountainRangeError

type Value = T

fn len(&self) -> Result<usize, Self::Error>

Returns the number of hashes stored in the backend

fn is_empty(&self) -> Result<bool, Self::Error>

Returns if empty

fn push(&mut self, item: Self::Value) -> Result<usize, Self::Error>

Store a new item and return the index of the stored item

fn get(&self, index: usize) -> Result<Option<Self::Value>, Self::Error>

Return the item at the given index

fn clear(&mut self) -> Result<(), Self::Error>

Remove all stored items from the the backend.

fn position(&self, item: &Self::Value) -> Result<Option<usize>, Self::Error>

Finds the index of the specified stored item, it will return None if the object could not be found.

impl<T: Clone + PartialEq> ArrayLikeExt for MemBackendVec<T>

type Value = T

fn truncate(&mut self, len: usize) -> Result<(), MerkleMountainRangeError>

Shortens the array, keeping the first len elements and dropping the rest.

fn shift(&mut self, n: usize) -> Result<(), MerkleMountainRangeError>

Shift the array, by discarding the first n elements from the front.

fn push_front(
    &mut self,
    item: Self::Value
) -> Result<(), MerkleMountainRangeError>

Store a new item first in the array, previous items will be shifted up to make room.

fn for_each<F>(&self, f: F) -> Result<(), MerkleMountainRangeError> where
    F: FnMut(Result<Self::Value, MerkleMountainRangeError>), 

Execute the given closure for each value in the array

impl<T: Clone> Clone for MemBackendVec<T>

fn clone(&self) -> MemBackendVec<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for MemBackendVec<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for MemBackendVec<T>

fn default() -> MemBackendVec<T>

Returns the “default value” for a type.