Trait frequency::Frequency

pub trait Frequency<'t, T> where
    &'t Self: 't + IntoIterator,
    T: 't + Eq, {
    type N: Num;
    type Iter: Iterator<Item = (&'t T, &'t Self::N)>;
    type Items: Iterator<Item = &'t T>;
    type Counts: Iterator<Item = &'t Self::N>;
    fn count(&self, value: &T) -> Self::N;
    fn increment(&mut self, value: T);
    fn iter(&'t self) -> Self::Iter;
    fn items(&'t self) -> Self::Items;
    fn counts(&'t self) -> Self::Counts;
}

Associated Types

type N: Num

The type used to record counts.

type Iter: Iterator<Item = (&'t T, &'t Self::N)>

The type of an iterator over item-count pairs.

type Items: Iterator<Item = &'t T>

The type of an iterator over items.

type Counts: Iterator<Item = &'t Self::N>

The type of an iterator over counts.

Required Methods

fn count(&self, value: &T) -> Self::N

Returns the count of an item.

fn increment(&mut self, value: T)

Increments the count for an item.

fn iter(&'t self) -> Self::Iter

An iterator visiting all key-value pairs. Iterator element type is (&'t T, &'t usize).

fn items(&'t self) -> Self::Items

An iterator visiting all keys in arbitrary order. Iterator element type is &'t T.

fn counts(&'t self) -> Self::Counts

An iterator visiting all counts in arbitrary order. Iterator element type is &'t usize.

Implementors