Enum BlockNumber 

pub enum BlockNumber {
    Latest,
    Finalized,
    Safe,
    Earliest,
    Pending,
    Number(U64),
}

A block number or tag.

Variants

Latest

Latest block

Finalized

Finalized block accepted as canonical

Safe

Safe head block

Earliest

Earliest block (genesis)

Pending

Pending block (not yet part of the blockchain)

Number(U64)

Block by number from canon chain

Implementations

impl BlockNumber

pub fn as_number(&self) -> Option<U64>

Returns the numeric block number if explicitly set

pub fn is_number(&self) -> bool

Returns true if a numeric block number is set

pub fn is_latest(&self) -> bool

Returns true if it’s “latest”

pub fn is_finalized(&self) -> bool

Returns true if it’s “finalized”

pub fn is_safe(&self) -> bool

Returns true if it’s “safe”

pub fn is_pending(&self) -> bool

Returns true if it’s “pending”

pub fn is_earliest(&self) -> bool

Returns true if it’s “earliest”

Trait Implementations

impl Clone for BlockNumber

fn clone(&self) -> BlockNumber

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BlockNumber

impl Debug for BlockNumber

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

Formats the value using the given formatter.

impl Default for BlockNumber

fn default() -> BlockNumber

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for BlockNumber

fn deserialize<D>( deserializer: D, ) -> Result<BlockNumber, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BlockNumber

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

Formats the value using the given formatter.

impl Eq for BlockNumber

impl From<LenientBlockNumber> for BlockNumber

fn from(b: LenientBlockNumber) -> BlockNumber

Converts to this type from the input type.

impl<T> From<T> for BlockNumber

where T: Into<U64>,

fn from(num: T) -> BlockNumber

Converts to this type from the input type.

impl FromStr for BlockNumber

type Err = String

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<BlockNumber, <BlockNumber as FromStr>::Err>

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

impl Hash for BlockNumber

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

where __H: Hasher,

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 PartialEq for BlockNumber

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

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

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BlockNumber

impl TryFrom<StringifiedBlockNumber> for BlockNumber

type Error = String

The type returned in the event of a conversion error.

fn try_from( value: StringifiedBlockNumber, ) -> Result<BlockNumber, <BlockNumber as TryFrom<StringifiedBlockNumber>>::Error>

Performs the conversion.