Struct crdts::gcounter::GCounter

pub struct GCounter<A: Actor> { /* fields omitted */ }

GCounter is a grow-only witnessed counter.

Examples

use crdts::{GCounter, CmRDT};

let mut a = GCounter::new();
let mut b = GCounter::new();

a.apply(a.inc("A"));
b.apply(b.inc("B"));

assert_eq!(a.read(), b.read());

a.apply(a.inc("A"));
assert!(a.read() > b.read());

Implementations

impl<A: Actor> GCounter<A>

pub fn new() -> Self

Produce a new GCounter.

pub fn inc(&self, actor: A) -> Dot<A>

Generate Op to increment the counter.

pub fn read(&self) -> BigUint

Return the current sum of this counter.

Trait Implementations

impl<A: Actor> Causal<A> for GCounter<A>

fn forget(&mut self, clock: &VClock<A>)

Forget data that is strictly smaller than this clock

impl<A: Clone + Actor> Clone for GCounter<A>

fn clone(&self) -> GCounter<A>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<A: Actor> CmRDT for GCounter<A>

type Op = Dot<A>

Op defines a mutation to the CRDT. As long as Op's from one actor are replayed in exactly the same order they were generated by that actor, the CRDT will converge. In other words, we must have a total ordering on each actors operations, while requiring only a partial order over all ops. E.g.

fn apply(&mut self, op: Self::Op)

Apply an Op to the CRDT

impl<A: Actor> CvRDT for GCounter<A>

fn merge(&mut self, other: Self)

Merge the given CRDT into the current CRDT.

impl<A: Debug + Actor> Debug for GCounter<A>

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

Formats the value using the given formatter.

impl<A: Actor> Default for GCounter<A>

fn default() -> Self

Returns the "default value" for a type.

impl<'de, A: Actor> Deserialize<'de> for GCounter<A> where
    A: Deserialize<'de>, 

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<A: Eq + Actor> Eq for GCounter<A>

impl<A: Hash + Actor> Hash for GCounter<A>

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<A: PartialEq + Actor> PartialEq<GCounter<A>> for GCounter<A>

fn eq(&self, other: &GCounter<A>) -> bool

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

fn ne(&self, other: &GCounter<A>) -> bool

This method tests for !=.

impl<A: Actor> Serialize for GCounter<A> where
    A: Serialize, 

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

Serialize this value into the given Serde serializer.

impl<A: Actor> StructuralEq for GCounter<A>

impl<A: Actor> StructuralPartialEq for GCounter<A>