Struct RowShapeFingerprint 

#[repr(transparent)]
pub struct RowShapeFingerprint(pub Hash64);

A fingerprint that uniquely identifies a shape layout.

This is an 8-byte hash stored in the header of every encoded row, allowing the shape to be identified without external metadata.

Tuple Fields

0: Hash64

Implementations

impl RowShapeFingerprint

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

Create a new shape fingerprint from a u64 value.

pub const fn zero() -> Self

Create a zero/empty fingerprint.

pub const fn as_u64(&self) -> u64

Get the underlying u64 value.

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

Convert to little-endian bytes.

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

Create from little-endian bytes.

Methods from Deref<Target = u64>

pub const MIN: u64 = 0

pub const MAX: u64

pub const BITS: u32

Trait Implementations

impl Clone for RowShapeFingerprint

fn clone(&self) -> RowShapeFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowShapeFingerprint

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

Formats the value using the given formatter.

impl Deref for RowShapeFingerprint

type Target = u64

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de> Deserialize<'de> for RowShapeFingerprint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Hash64> for RowShapeFingerprint

fn from(hash: Hash64) -> Self

Converts to this type from the input type.

impl From<RowShapeFingerprint> for Hash64

fn from(fp: RowShapeFingerprint) -> Self

Converts to this type from the input type.

impl From<u64> for RowShapeFingerprint

fn from(value: u64) -> Self

Converts to this type from the input type.

impl Hash for RowShapeFingerprint

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 RowShapeFingerprint

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

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

fn partial_cmp(&self, other: &RowShapeFingerprint) -> 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 RowShapeFingerprint

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for RowShapeFingerprint

impl Eq for RowShapeFingerprint

impl StructuralPartialEq for RowShapeFingerprint