Struct StoreSnapshot 

pub struct StoreSnapshot(/* private fields */);

An opaque cursor into the MappingStore insertion sequence.

Obtained from MappingStore::snapshot and passed to MappingStore::iter_since. Using a dedicated type prevents accidentally passing an unrelated usize (a count, an index, a capacity) to iter_since, which would silently yield the wrong subset of entries.

Breaking change in 0.13.0: MappingStore::snapshot previously returned usize; it now returns StoreSnapshot. Call sites should change store.snapshot() → the new type and iter_since(n) → iter_since(snap). To iterate all entries use StoreSnapshot::start instead of the literal 0.

Implementations

impl StoreSnapshot

pub fn start() -> Self

A snapshot representing the beginning of the store (before any insertions). Passing this to MappingStore::iter_since yields every entry in the store — equivalent to the former iter_since(0).

Trait Implementations

impl Clone for StoreSnapshot

fn clone(&self) -> StoreSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StoreSnapshot

impl Debug for StoreSnapshot

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

Formats the value using the given formatter.

impl Default for StoreSnapshot

fn default() -> Self

Returns the “default value” for a type.

impl Eq for StoreSnapshot

impl PartialEq for StoreSnapshot

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for StoreSnapshot