Struct Fingerprint 

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

A 64-bit FNV-1a hash of a value’s JSON serialization with every object’s keys in sorted order and every whole number written as an integer, so a store that reorders keys (Postgres jsonb, sorted-key dumps) or writes 20.0 as 20 never changes it. It is stored as 16 hex digits, since a store that reads JSON numbers as doubles would round a 64-bit number.

Implementations

impl Fingerprint

pub fn of(value: &impl Serialize) -> Self

The fingerprint of value’s JSON bytes, keys sorted and whole numbers as integers.

Trait Implementations

impl Clone for Fingerprint

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Fingerprint

impl Debug for Fingerprint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Fingerprint

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

Deserialize this value from the given Serde deserializer.

impl Eq for Fingerprint

impl Hash for Fingerprint

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 PartialEq for Fingerprint

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Fingerprint

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

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Fingerprint