Struct MVRegister 

pub struct MVRegister<T> { /* private fields */ }

A register that keeps all concurrent values.

Unlike LWW-Register which silently picks a winner, MVRegister preserves all concurrent writes so conflicts can be detected and resolved.

Implementations

impl<T> MVRegister<T>

pub fn new(replica_id: ReplicaId) -> Self

Create a new empty register with a specific replica ID.

pub fn new_random() -> Self

Create a new register with a random replica ID.

pub fn replica_id(&self) -> ReplicaId

Get the replica ID for this register.

impl<T: Clone + PartialEq> MVRegister<T>

pub fn set(&mut self, value: T)

Set a new value, creating a new version that dominates all current values.

pub fn values(&self) -> Vec<&T>

Get all current values.

If there’s only one value, there’s no conflict. Multiple values indicate concurrent writes that need resolution.

pub fn resolve(&mut self, value: T)

Resolve a conflict by setting a new value.

This is the same as set, but semantically indicates conflict resolution.

pub fn has_conflict(&self) -> bool

Check if there’s a conflict (more than one value).

Trait Implementations

impl<T: Clone> Clone for MVRegister<T>

fn clone(&self) -> MVRegister<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for MVRegister<T>

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

Formats the value using the given formatter.

impl<T: Clone + PartialEq + Default> Default for MVRegister<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Clone + PartialEq + Serialize + DeserializeOwned + Send + 'static> DeltaCrdt for MVRegister<T>

type Delta = MVRegisterDelta<T>

The type of delta this CRDT produces.

fn delta_since(&self, since: &VClock) -> Option<Self::Delta>

Extract a delta containing changes since the given version.

fn apply_delta(&mut self, delta: &Self::Delta)

Apply an incoming delta to this CRDT.

fn version(&self) -> VClock

Get the current version (vector clock) of this CRDT.

impl<'de, T> Deserialize<'de> for MVRegister<T>

where T: Deserialize<'de>,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Clone + PartialEq> Merge for MVRegister<T>

fn merge(&mut self, other: &Self)

Merge another register into this one.

Keeps values that are not dominated by any other value.

impl<T: PartialEq> PartialEq for MVRegister<T>

fn eq(&self, other: &MVRegister<T>) -> 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<T> Serialize for MVRegister<T>

where T: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> StructuralPartialEq for MVRegister<T>