Struct View 

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

A monotonically increasing counter within a single epoch.

Views represent individual consensus rounds within an epoch. Each view corresponds to one attempt to reach consensus on a proposal.

Implementations

impl View

pub const fn zero() -> Self

Returns view zero.

pub const fn new(value: u64) -> Self

Creates a new view from a u64 value.

pub const fn get(self) -> u64

Returns the underlying u64 value.

pub const fn is_zero(self) -> bool

Returns true if this is view zero.

pub const fn next(self) -> Self

Returns the next view.

Panics

Panics if the view would overflow u64::MAX. In practice, this is extremely unlikely to occur during normal operation.

pub fn previous(self) -> Option<Self>

Returns the previous view, or None if this is view zero.

Unlike View::next(), this returns an Option since reaching view zero is common, whereas overflowing u64::MAX is not expected in normal operation.

pub const fn saturating_add(self, delta: ViewDelta) -> Self

Adds a view delta, saturating at u64::MAX.

pub const fn saturating_sub(self, delta: ViewDelta) -> Self

Subtracts a view delta, saturating at zero.

pub const fn range(start: Self, end: Self) -> ViewRange

Returns an iterator over the range [start, end).

If start >= end, returns an empty range.

Trait Implementations

impl Clone for View

fn clone(&self) -> View

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for View

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

Formats the value using the given formatter.

impl Default for View

fn default() -> View

Returns the “default value” for a type.

impl Display for View

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

Formats the value using the given formatter.

impl EncodeSize for View

fn encode_size(&self) -> usize

Returns the encoded size of this value (in bytes).

impl From<View> for U64

fn from(view: View) -> Self

Converts to this type from the input type.

impl Hash for View

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 View

fn cmp(&self, other: &View) -> 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 View

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

fn partial_cmp(&self, other: &View) -> 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 Read for View

type Cfg = ()

The Cfg type parameter allows passing configuration during the read process. This is crucial for safely decoding untrusted data, for example, by providing size limits for collections or strings.

fn read_cfg(buf: &mut impl Buf, _cfg: &Self::Cfg) -> Result<Self, Error>

Reads a value from the buffer using the provided configuration cfg.

impl Write for View

fn write(&self, buf: &mut impl BufMut)

Writes the binary representation of self to the provided buffer buf.

impl Copy for View

impl Eq for View

impl StructuralPartialEq for View