Struct Stamp 

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

A packed change stamp: milliseconds since the store epoch in the upper 30 bits, the change in bits 0–1: 00 updated without a direction, 01 inserted, 10 updated up, 11 updated down. Zero means “never changed”.

Implementations

impl Stamp

pub const NONE: Self

No change recorded.

pub fn new(ms: u32, change: RowChange) -> Self

Creates a stamp of change without a direction. ms wraps after ~12 days of store uptime.

pub fn with_direction( ms: u32, change: RowChange, direction: Option<ChangeDirection>, ) -> Self

Creates a stamp of change with a direction; direction counts only for RowChange::Updated. ms wraps after ~12 days of store uptime.

RowChange::Removed is not a cell’s change: the store writes a removal stamp for a fading row itself (a debug assertion).

pub fn is_set(self) -> bool

Returns true if a change was recorded.

pub fn ms(self) -> u32

Milliseconds since the store epoch.

pub fn change(self) -> RowChange

What happened to the row.

pub fn direction(self) -> Option<ChangeDirection>

The direction of an update; None for an insert or an update with no direction.

Trait Implementations

impl Clone for Stamp

fn clone(&self) -> Stamp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Stamp

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

Formats the value using the given formatter.

impl Default for Stamp

fn default() -> Stamp

Returns the “default value” for a type.

impl PartialEq for Stamp

fn eq(&self, other: &Stamp) -> 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 Copy for Stamp

impl Eq for Stamp

impl StructuralPartialEq for Stamp