Struct HalfMultisetJoinState 

pub struct HalfMultisetJoinState<Key, ValBuild, ValProbe> { /* private fields */ }

Available on crate feature std only.

HalfJoinState with multiset semantics.

Allows duplicate key-value pairs to be stored.

Trait Implementations

impl<Key: Debug, ValBuild: Debug, ValProbe: Debug> Debug for HalfMultisetJoinState<Key, ValBuild, ValProbe>

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

Formats the value using the given formatter.

impl<Key, ValBuild, ValProbe> Default for HalfMultisetJoinState<Key, ValBuild, ValProbe>

fn default() -> Self

Returns the “default value” for a type.

impl<Key, ValBuild, ValProbe> HalfJoinState<Key, ValBuild, ValProbe> for HalfMultisetJoinState<Key, ValBuild, ValProbe>

where Key: Clone + Eq + Hash, ValBuild: Clone, ValProbe: Clone,

fn build(&mut self, k: Key, v: Cow<'_, ValBuild>) -> bool

Insert a key-value pair into the join state.

fn probe(&mut self, k: &Key, v: &ValProbe) -> Option<(Key, ValProbe, ValBuild)>

Probe the join state for matches with the given key and value.

fn full_probe(&self, k: &Key) -> Iter<'_, ValBuild>

Returns an iterator over all values for a given key.

fn pop_match(&mut self) -> Option<(Key, ValProbe, ValBuild)>

Pop a stored match from previous probe calls.

fn len(&self) -> usize

Returns the number of keys in the join state.

fn iter(&self) -> Iter<'_, Key, SmallVec<[ValBuild; 1]>>

Returns an iterator over all entries in the state.

fn clear(&mut self)

Clear the state without de-allocating.

fn is_empty(&self) -> bool

Returns true if the state is empty.