Enum ViewState 

pub enum ViewState {
    PresentInFinalView,
    ValueChangedLater,
    AbsentInFinalView,
    CarvedResidue,
}

The EVIDENCE-based state of a row version relative to the FINAL live view.

Strictly evidence, never intent: it records what the bytes show (present / changed-later / absent / carved), not what the user meant to do.

Variants

PresentInFinalView

This exact value is present and unchanged in the final live view — the current row.

ValueChangedLater

An earlier value that a later view replaced with a DIFFERENT value for the same rowid.

AbsentInFinalView

The rowid’s last value before it disappeared: absent from the final live view (a deletion).

CarvedResidue

A free-space carve — order-unknown residue, not a positioned commit value.

Trait Implementations

impl Clone for ViewState

fn clone(&self) -> ViewState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ViewState

impl Debug for ViewState

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

Formats the value using the given formatter.

impl Eq for ViewState

impl PartialEq for ViewState

fn eq(&self, other: &ViewState) -> 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 ViewState