Struct ViewVersion 

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

Monotonic version counter for the view-state itself.

Incremented on every ViewState update — even within the same epoch. Allows consumers to cheaply test staleness: my_version == current.version() without deep-comparing the full ViewState.

Implementations

impl ViewVersion

pub const INITIAL: Self

The initial version (zero).

pub fn new(val: u64) -> Self

Create from a raw value.

pub fn next(self) -> Self

Return the next version.

pub fn as_u64(self) -> u64

Returns the raw value.

pub fn versions_since(self, other: Self) -> u64

Number of versions between self and other. Returns 0 if other >= self.

Trait Implementations

impl Clone for ViewVersion

fn clone(&self) -> ViewVersion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewVersion

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

Formats the value using the given formatter.

impl Default for ViewVersion

fn default() -> ViewVersion

Returns the “default value” for a type.

impl Display for ViewVersion

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

Formats the value using the given formatter.

impl Hash for ViewVersion

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ViewVersion

fn cmp(&self, other: &ViewVersion) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ViewVersion

fn eq(&self, other: &ViewVersion) -> 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 PartialOrd for ViewVersion

fn partial_cmp(&self, other: &ViewVersion) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for ViewVersion

impl Eq for ViewVersion

impl StructuralPartialEq for ViewVersion