Struct differential_dataflow::trace::implementations::ord::OrdValCursor
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pub struct OrdValCursor<V: Ord + Clone, T: Lattice + Ord + Clone, R: Diff> { /* fields omitted */ }
A cursor for navigating a single layer.
Trait Implementations
impl<V: Debug + Ord + Clone, T: Debug + Lattice + Ord + Clone, R: Debug + Diff> Debug for OrdValCursor<V, T, R>[src]
fn fmt(&self, __arg_0: &mut Formatter) -> Result[src]
Formats the value using the given formatter. Read more
impl<K, V, T, R> Cursor<K, V, T, R> for OrdValCursor<V, T, R> where
K: Ord + Clone,
V: Ord + Clone,
T: Lattice + Ord + Clone,
R: Diff, [src]
K: Ord + Clone,
V: Ord + Clone,
T: Lattice + Ord + Clone,
R: Diff,
type Storage = OrdValBatch<K, V, T, R>
Type the cursor addresses data in.
fn key<'a>(&self, storage: &'a Self::Storage) -> &'a K[src]
A reference to the current key. Asserts if invalid.
fn val<'a>(&self, storage: &'a Self::Storage) -> &'a V[src]
A reference to the current value. Asserts if invalid.
fn map_times<L: FnMut(&T, R)>(&mut self, storage: &Self::Storage, logic: L)[src]
Applies logic to each pair of time and difference. Intended for mutation of the closure's scope. Read more
fn key_valid(&self, storage: &Self::Storage) -> bool[src]
Indicates if the current key is valid. Read more
fn val_valid(&self, storage: &Self::Storage) -> bool[src]
Indicates if the current value is valid. Read more
fn step_key(&mut self, storage: &Self::Storage)[src]
Advances the cursor to the next key. Indicates if the key is valid.
fn seek_key(&mut self, storage: &Self::Storage, key: &K)[src]
Advances the cursor to the specified key. Indicates if the key is valid.
fn step_val(&mut self, storage: &Self::Storage)[src]
Advances the cursor to the next value. Indicates if the value is valid.
fn seek_val(&mut self, storage: &Self::Storage, val: &V)[src]
Advances the cursor to the specified value. Indicates if the value is valid.
fn rewind_keys(&mut self, storage: &Self::Storage)[src]
Rewinds the cursor to the first key.
fn rewind_vals(&mut self, storage: &Self::Storage)[src]
Rewinds the cursor to the first value for current key.
fn get_key<'a>(&self, storage: &'a Self::Storage) -> Option<&'a K>[src]
Returns a reference to the current key, if valid.
fn get_val<'a>(&self, storage: &'a Self::Storage) -> Option<&'a V>[src]
Returns a reference to the current value, if valid.