Struct crdts::gcounter::GCounter

pub struct GCounter<A: Ord + Clone + Serialize + DeserializeOwned> { /* fields omitted */ }

GCounter is a grow-only witnessed counter.

Examples

use crdts::GCounter;
let (mut a, mut b) = (GCounter::new(), GCounter::new());
a.increment("A".to_string());
b.increment("B".to_string());
assert_eq!(a.value(), b.value());
assert!(a == b);
a.increment("A".to_string());
assert!(a > b);

Methods

impl<A: Ord + Clone + Serialize + DeserializeOwned> GCounter<A>

fn new() -> GCounter<A>

Produces a new GCounter.

fn increment(&mut self, actor: A)

Increments a particular actor's counter.

fn value(&self) -> u64

Returns the current sum of this counter.

fn merge(&mut self, other: GCounter<A>)

Merge another gcounter into this one, without regard to dominance.

Examples

use crdts::GCounter;
let (mut a, mut b, mut c) = (GCounter::new(), GCounter::new(), GCounter::new());
a.increment("A".to_string());
b.increment("B".to_string());
c.increment("A".to_string());
c.increment("B".to_string());
a.merge(b);
assert_eq!(a, c);

Trait Implementations

impl<A: Debug + Ord + Clone + Serialize + DeserializeOwned> Debug for GCounter<A>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<A: Eq + Ord + Clone + Serialize + DeserializeOwned> Eq for GCounter<A>

impl<A: Clone + Ord + Clone + Serialize + DeserializeOwned> 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: Hash + Ord + Clone + Serialize + DeserializeOwned> Hash for GCounter<A>

fn hash<__HA: Hasher>(&self, __arg_0: &mut __HA)

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: Ord + Clone + Serialize + DeserializeOwned> Ord for GCounter<A>

fn cmp(&self, other: &GCounter<A>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl<A: Ord + Clone + Serialize + DeserializeOwned> PartialOrd for GCounter<A>

fn partial_cmp(&self, other: &GCounter<A>) -> 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<A: Ord + Clone + Serialize + DeserializeOwned> PartialEq 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: &Rhs) -> bool

This method tests for !=.