Struct Frecency 

pub struct Frecency { /* private fields */ }

What was chosen how often and when, by an id the caller picks (a package id, an action id). Time is passed in as seconds since the epoch, so the ranking is testable without a clock.

Implementations

impl Frecency

pub fn record(&mut self, id: &str, now: u64)

Note that id was chosen at now (seconds since the epoch).

pub fn boost(&self, id: &str, now: u64, max: i32) -> i32

0..=max: how strongly id is preferred among equal matches.

pub fn share(&self, id: &str, now: u64) -> f32

0.0..=1.0: how strongly id is preferred, at full resolution: the share of Self::boost’s scale before it is rounded to steps.

pub fn most_recent(&self, limit: usize) -> Vec<&str>

The ids chosen most recently, newest first, at most limit of them.

pub fn last_used(&self, id: &str) -> Option<u64>

When id was last chosen (seconds since the epoch), if ever.

pub fn serialize(&self) -> String

One id, count and last-used line per entry.

pub fn parse(text: &str) -> Frecency

Read Self::serialize’s text, skipping anything malformed.

Trait Implementations

impl Clone for Frecency

fn clone(&self) -> Frecency

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Frecency

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

Formats the value using the given formatter.

impl Default for Frecency

fn default() -> Frecency

Returns the “default value” for a type.

impl PartialEq for Frecency

fn eq(&self, other: &Frecency) -> 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 Eq for Frecency

impl StructuralPartialEq for Frecency