Struct differential_dataflow::trace::layers::ordered::OrderedCursor
source · pub struct OrderedCursor<L: Trie> {
pub child: L::Cursor,
/* private fields */
}
Expand description
A cursor with a child cursor that is updated as we move.
Fields§
§child: L::Cursor
The cursor for the trie layer below this one.
Trait Implementations§
source§impl<K, L, O, C> Cursor<OrderedLayer<K, L, O, C>> for OrderedCursor<L>where
K: Ord,
C: BatchContainer<Item = K>,
L: Trie,
O: OrdOffset,
impl<K, L, O, C> Cursor<OrderedLayer<K, L, O, C>> for OrderedCursor<L>where K: Ord, C: BatchContainer<Item = K>, L: Trie, O: OrdOffset,
source§fn key<'a>(&self, storage: &'a OrderedLayer<K, L, O, C>) -> &'a Self::Key
fn key<'a>(&self, storage: &'a OrderedLayer<K, L, O, C>) -> &'a Self::Key
Reveals the current key.
source§fn step(&mut self, storage: &OrderedLayer<K, L, O, C>)
fn step(&mut self, storage: &OrderedLayer<K, L, O, C>)
Advances the cursor by one element.
source§fn seek(&mut self, storage: &OrderedLayer<K, L, O, C>, key: &Self::Key)
fn seek(&mut self, storage: &OrderedLayer<K, L, O, C>, key: &Self::Key)
Advances the cursor until the location where
key
would be expected.source§fn valid(&self, _storage: &OrderedLayer<K, L, O, C>) -> bool
fn valid(&self, _storage: &OrderedLayer<K, L, O, C>) -> bool
Returns
true
if the cursor points at valid data. Returns false
if the cursor is exhausted.source§fn rewind(&mut self, storage: &OrderedLayer<K, L, O, C>)
fn rewind(&mut self, storage: &OrderedLayer<K, L, O, C>)
Rewinds the cursor to its initial state.
source§fn reposition(
&mut self,
storage: &OrderedLayer<K, L, O, C>,
lower: usize,
upper: usize
)
fn reposition( &mut self, storage: &OrderedLayer<K, L, O, C>, lower: usize, upper: usize )
Repositions the cursor to a different range of values.
Auto Trait Implementations§
impl<L> RefUnwindSafe for OrderedCursor<L>where <L as Trie>::Cursor: RefUnwindSafe,
impl<L> Send for OrderedCursor<L>where <L as Trie>::Cursor: Send,
impl<L> Sync for OrderedCursor<L>where <L as Trie>::Cursor: Sync,
impl<L> Unpin for OrderedCursor<L>where <L as Trie>::Cursor: Unpin,
impl<L> UnwindSafe for OrderedCursor<L>where <L as Trie>::Cursor: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more