Struct FusedIterator 

pub struct FusedIterator<I: StorageIterator> { /* private fields */ }

A wrapper around existing iterator, will prevent users from calling next when the iterator is invalid. If an iterator is already invalid, next does not do anything. If next returns an error, is_valid should return false, and next should always return an error.

Implementations

impl<I: StorageIterator> FusedIterator<I>

pub fn new(iter: I) -> Self

Trait Implementations

impl<I: StorageIterator> StorageIterator for FusedIterator<I>

type KeyType<'a> = <I as StorageIterator>::KeyType<'a> where Self: 'a

fn is_valid(&self) -> bool

Check if the current iterator is valid.

fn key(&self) -> Self::KeyType<'_>

Get the current key.

fn value(&self) -> &[u8]

Get the current value.

fn next(&mut self) -> Result<()>

Move to the next position.

fn num_active_iterators(&self) -> usize

Number of underlying active iterators for this iterator.