Trait stats::Commute

pub trait Commute: Sized {
    fn merge(&mut self, other: Self);

    fn consume<I: Iterator<Item = Self>>(&mut self, other: I) { ... }
}

Defines an interface for types that have an identity and can be commuted.

The value returned by Default::default must be its identity with respect to the merge operation.

Required Methods

fn merge(&mut self, other: Self)

Merges the value other into self.

Provided Methods

fn consume<I: Iterator<Item = Self>>(&mut self, other: I)

Merges the values in the iterator into self.

Examples found in repository

src/lib.rs (line 124)

pub fn merge_all<T: Commute, I: Iterator<Item = T>>(mut it: I) -> Option<T> {
    it.next().map_or_else(
        || None,
        |mut init| {
            init.consume(it);
            Some(init)
        },
    )
}

Implementations on Foreign Types

impl<T: Commute> Commute for Option<T>

fn merge(&mut self, other: Option<T>)

impl<T: Commute, E> Commute for Result<T, E>

fn merge(&mut self, other: Result<T, E>)

impl<T: Commute> Commute for Vec<T>

fn merge(&mut self, other: Vec<T>)

Implementors

impl Commute for OnlineStats

impl<T: Eq + Hash> Commute for Frequencies<T>

impl<T: PartialOrd> Commute for MinMax<T>

impl<T: PartialOrd> Commute for Unsorted<T>