Struct ckb_types::packed::OutPoint

pub struct OutPoint(_);

Implementations

impl OutPoint

pub const TOTAL_SIZE: usize

pub const FIELD_SIZES: [usize; 2]

pub const FIELD_COUNT: usize

pub fn tx_hash(&self) -> Byte32

pub fn index(&self) -> Uint32

pub fn as_reader<'r>(&'r self) -> OutPointReader<'r>

impl OutPoint

pub fn new(tx_hash: Byte32, index: u32) -> Self

Creates a new OutPoint.

pub fn null() -> Self

Creates a new null OutPoint.

pub fn is_null(&self) -> bool

Checks whether self is a null OutPoint.

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

Generates a binary data to be used as a key for indexing cells in storage.

Notice

The difference between Self::as_slice() and Self::to_cell_key() is the byteorder of the field index.

• Uses little endian for the field index in serialization.

  Because in the real world, the little endian machines make up the majority, we can cast it as a number without re-order the bytes.

• Uses big endian for the field index to index cells in storage.

  So we can use tx_hash as key prefix to seek the cells from storage in the forward order, so as to traverse cells in the forward order too.

Trait Implementations

impl Clone for OutPoint

fn clone(&self) -> OutPoint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OutPoint

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

Formats the value using the given formatter.

impl Default for OutPoint

fn default() -> Self

Returns the “default value” for a type.

impl Display for OutPoint

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

Formats the value using the given formatter.

impl Entity for OutPoint

type Builder = OutPointBuilder

const NAME: &'static str

fn new_unchecked(data: Bytes) -> Self

fn as_bytes(&self) -> Bytes

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

fn from_slice(slice: &[u8]) -> VerificationResult<Self>

fn from_compatible_slice(slice: &[u8]) -> VerificationResult<Self>

fn new_builder() -> Self::Builder

fn as_builder(self) -> Self::Builder

impl Hash for OutPoint

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, 

Feeds a slice of this type into the given Hasher.

impl LowerHex for OutPoint

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

Formats the value using the given formatter.

impl<T> PackVec<OutPointVec, OutPoint> for T where
    T: IntoIterator<Item = OutPoint>, 

fn pack(self) -> OutPointVec

Packs a vector of binary data into one binary data.

impl PartialEq<OutPoint> for OutPoint

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

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

This method tests for !=.

impl Eq for OutPoint