Struct History 

pub struct History { /* private fields */ }

Fixed-size history of samples, newest last.

Implementations

impl History

pub fn push(&mut self, value: f64)

Appends a sample, dropping the oldest when full.

pub fn last(&self, n: usize) -> Vec<f64>

The newest n samples (or fewer), oldest first.

pub fn max_of_last(&self, n: usize) -> f64

Largest of the newest n samples.

pub fn graph( &self, columns: usize, span: GraphSpan, interval: Duration, ) -> Vec<f64>

Values for a graph columns wide, oldest first. GraphSpan::Fit gives the newest sample per column; a time span gives the samples of that span (one every interval) spread over the columns, averaged where several share a column and interpolated where there are fewer samples than columns. While the history is shorter than the span, fewer values come back, so the graph fills up from the right.

Trait Implementations

impl Clone for History

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for History

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

Formats the value using the given formatter.

impl Default for History

fn default() -> Self

Returns the “default value” for a type.