Struct p8n_types::Uuid

pub struct Uuid { /* private fields */ }

Universally unique identifier.

UUIDs consist of an origin and an optional timestamp, both 64 bit integers.

Implementations

impl Uuid

pub fn set_node_id(s: &str) -> Result<()>

Sets the default UUID origin. s must not be longer than 10 characters and only consist of [0-9a-zA-Z~_].

pub fn node_id() -> Str

The current default UUID origin. Initially “0”.

pub fn known(s: &[u8]) -> Result<Self>

New “transcendent” UUID with origin s and no timestamp. Used to identify “global” entities like types. s must a array of [0-9a-zA-Z~_] no longer than 10 characters.

pub fn now() -> Self

New UUID with the default origin (see node_id and set_node_id) and the current time. Ignoring leap seconds and other events that mess with the system time all calls to this functions return unique UUID (duh).

pub fn now_foreign(s: &[u8]) -> Result<Self>

New timestamped UUID with origin s. See now. s must a array of [0-9a-zA-Z~_] no longer than 10 characters.

pub fn from_bytes(b: &[u8]) -> Result<Uuid>

Parses a 16 byte UUID from b. Must be a 16 byte slice.

pub fn as_bytes(&self) -> [u8; 16]

Returns this UUID as a byte array.

Trait Implementations

impl Arbitrary for Uuid

fn arbitrary<G: Gen>(g: &mut G) -> Self

fn shrink(&self) -> Box<dyn Iterator<Item = Self> + 'static, Global>

impl Clone for Uuid

fn clone(&self) -> Uuid

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Uuid

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

Formats the value using the given formatter.

impl Default for Uuid

fn default() -> Self

Returns the “default value” for a type.

impl Display for Uuid

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

Formats the value using the given formatter.

impl FromStr for Uuid

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Uuid, ()>

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

impl Hash for Uuid

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 Uuid

fn cmp(&self, other: &Uuid) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<Uuid> for Uuid

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<Uuid> for Uuid

fn partial_cmp(&self, other: &Uuid) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Uuid

impl StructuralEq for Uuid

impl StructuralPartialEq for Uuid