Struct FeedIndex 

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

Feed index: 8 bytes, big-endian u64. The all-0xff value is a “before first” sentinel matching bee-js FeedIndex.MINUS_ONE.

Implementations

impl FeedIndex

pub const LENGTH: usize = FEED_INDEX_LENGTH

Length in bytes (FEED_INDEX_LENGTH).

pub fn new(b: &[u8]) -> Result<Self, Error>

Construct a FeedIndex from bytes. Returns Error::LengthMismatch if b.len() does not match.

pub fn from_hex(s: &str) -> Result<Self, Error>

Parse from hex (with or without 0x prefix).

pub fn as_bytes(&self) -> &[u8]

Borrow the raw bytes.

pub fn to_vec(&self) -> Vec<u8>

Owned copy of the raw bytes.

pub fn to_hex(&self) -> String

Lowercase hex, no 0x prefix.

pub fn into_array(self) -> [u8; 8]

Consume into the inner array.

impl FeedIndex

pub const MINUS_ONE: FeedIndex

All-0xff “before first” / wraparound sentinel.

pub fn from_u64(n: u64) -> Self

Encode n as a big-endian feed index.

pub fn to_u64(&self) -> u64

Decode the big-endian u64. Returns u64::MAX for MINUS_ONE.

pub fn next(&self) -> Self

Successor index. The MINUS_ONE sentinel wraps to 0.

Trait Implementations

impl Clone for FeedIndex

fn clone(&self) -> FeedIndex

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeedIndex

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FeedIndex

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for FeedIndex

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

Formats the value using the given formatter.

impl FromStr for FeedIndex

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for FeedIndex

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 LowerHex for FeedIndex

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

Formats the value using the given formatter.

impl PartialEq for FeedIndex

fn eq(&self, other: &FeedIndex) -> 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 Serialize for FeedIndex

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Copy for FeedIndex

impl Eq for FeedIndex

impl StructuralPartialEq for FeedIndex