Struct TwoMergeIterator 

pub struct TwoMergeIterator<A: StorageIterator, B: StorageIterator> { /* private fields */ }

Merges two iterators of different types into one. If the two iterators have the same key, only produce the key once and prefer the entry from A.

Implementations

impl<A: 'static + StorageIterator, B: 'static + for<'a> StorageIterator<KeyType<'a> = A::KeyType<'a>>> TwoMergeIterator<A, B>

pub fn create(a: A, b: B) -> Result<Self>

Trait Implementations

impl<A: 'static + StorageIterator, B: 'static + for<'a> StorageIterator<KeyType<'a> = A::KeyType<'a>>> StorageIterator for TwoMergeIterator<A, B>

type KeyType<'a> = <A as StorageIterator>::KeyType<'a>

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

Get the current key.

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

Get the current value.

fn is_valid(&self) -> bool

Check if the current iterator is valid.

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

Move to the next position.

fn num_active_iterators(&self) -> usize

Number of underlying active iterators for this iterator.