Struct BlockNumber

#[repr(C)]
pub struct BlockNumber(/* private fields */);

Block number

Implementations

impl BlockNumber

pub const SIZE: usize = 8usize

Size in bytes

pub const ZERO: BlockNumber

Genesis block number

pub const ONE: BlockNumber

First block number

pub const MAX: BlockNumber

Max block number

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

Create new instance

pub const fn as_u64(self) -> u64

Get internal representation

pub const fn from_bytes(bytes: [u8; 8]) -> Self

Create block number from bytes

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

Convert block number to bytes

pub const fn checked_sub(self, rhs: Self) -> Option<Self>

Checked subtraction, returns None on underflow

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

Saturating subtraction

Trait Implementations

impl Add for BlockNumber

type Output = BlockNumber

The resulting type after applying the + operator.

fn add(self, rhs: BlockNumber) -> BlockNumber

Performs the + operation.

impl AddAssign for BlockNumber

fn add_assign(&mut self, rhs: BlockNumber)

Performs the += operation.

impl Clone for BlockNumber

fn clone(&self) -> BlockNumber

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BlockNumber

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

Formats the value using the given formatter.

impl Decode for BlockNumber

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

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<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BlockNumber

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

Formats the value using the given formatter.

impl Encode for BlockNumber

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>( &self, f: __CodecUsingEncodedCallback, ) -> __CodecOutputReturn

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl From<BlockNumber> for u64

fn from(value: BlockNumber) -> Self

Converts to this type from the input type.

impl From<u64> for BlockNumber

fn from(value: u64) -> Self

Converts to this type from the input type.

impl Hash for BlockNumber

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 MaxEncodedLen for BlockNumber

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.

impl Ord for BlockNumber

fn cmp(&self, other: &BlockNumber) -> 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 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 PartialOrd for BlockNumber

fn partial_cmp(&self, other: &BlockNumber) -> 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 Serialize for BlockNumber

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Step for BlockNumber

fn steps_between(start: &Self, end: &Self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (step_trait)

Returns the bounds on the number of successor steps required to get from start to end like Iterator::size_hint().

fn forward_checked(start: Self, count: usize) -> Option<Self>

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the successor of self count times.

fn backward_checked(start: Self, count: usize) -> Option<Self>

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the predecessor of self count times.

fn forward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the successor of self count times.

unsafe fn forward_unchecked(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the successor of self count times.

fn backward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the predecessor of self count times.

unsafe fn backward_unchecked(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the predecessor of self count times.

impl Sub for BlockNumber

type Output = BlockNumber

The resulting type after applying the - operator.

fn sub(self, rhs: BlockNumber) -> BlockNumber

Performs the - operation.

impl SubAssign for BlockNumber

fn sub_assign(&mut self, rhs: BlockNumber)

Performs the -= operation.

impl TrivialType for BlockNumber

where u64: TrivialType,

const METADATA: &[u8]

Data structure metadata in binary form, describing shape and types of the contents, see IoTypeMetadataKind for encoding details.

const SIZE: u32 = _

unsafe fn from_bytes(bytes: &[u8]) -> Option<&Self>

Create a reference to a type, which is represented by provided memory.

unsafe fn from_bytes_mut(bytes: &mut [u8]) -> Option<&mut Self>

Create a mutable reference to a type, which is represented by provided memory.

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

Access the underlying byte representation of a data structure

unsafe fn as_bytes_mut(&mut self) -> &mut [u8]

Access the underlying mutable byte representation of a data structure.

impl TypeInfo for BlockNumber

type Identity = BlockNumber

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl Copy for BlockNumber

impl EncodeLike for BlockNumber

impl Eq for BlockNumber

impl StructuralPartialEq for BlockNumber