Struct EntityCoverage 

pub struct EntityCoverage { /* private fields */ }

Independent index interval IDs for each ordered entity identity.

Explicit identities with empty coverage are preserved. An absent identity is still treated as empty and returned as None by EntityCoverage::get.

Implementations

impl EntityCoverage

pub fn empty() -> Self

Construct empty entity-scoped coverage.

pub fn get(&self, identity: &EntityIdentity) -> Option<&Coverage>

Borrow one identity’s coverage.

None means the identity is absent. Set operations treat absence as empty coverage.

pub fn iter(&self) -> Iter<'_, EntityIdentity, Coverage>

Iterate identities and their coverage in canonical order.

pub fn identity_count(&self) -> usize

Number of stored identities.

pub fn is_empty(&self) -> bool

Whether no identities are stored.

pub fn union_coverage(&mut self, identity: EntityIdentity, coverage: Coverage)

Merge coverage for one identity.

pub fn union(&self, other: &Self) -> Self

Return the union of two entity-scoped coverage values.

pub fn union_inplace(&mut self, other: &Self)

Merge another entity-scoped coverage value into this one.

pub fn intersect(&self, other: &Self) -> Self

Return overlap only where both identity and index interval ID match.

pub fn cardinality(&self) -> u128

Count covered (entity identity, index interval ID) pairs.

pub fn intersection_cardinality(&self, other: &Self) -> u128

Count overlapping (entity identity, index interval ID) pairs.

pub fn first_overlapping_identity_and_interval_id<'a>( &'a self, other: &Self, ) -> Option<(&'a EntityIdentity, IndexIntervalId)>

Return the first canonical identity and smallest overlapping index interval ID.

Trait Implementations

impl Clone for EntityCoverage

fn clone(&self) -> EntityCoverage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EntityCoverage

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

Formats the value using the given formatter.

impl Default for EntityCoverage

fn default() -> EntityCoverage

Returns the “default value” for a type.

impl Eq for EntityCoverage

impl PartialEq for EntityCoverage

fn eq(&self, other: &EntityCoverage) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for EntityCoverage