Struct DDSketch 

pub struct DDSketch { /* private fields */ }

This is a minimal DDSketch implementation

This implementation only supports a part of the standard (which is also only the parts dd backend supports :shrug:)

• max length contiguous bin store, with lower bin collapse behavior.
• Positive or zero values

The default sketch has a 1% relative accuracy, and only accepts positive points

See https://github.com/DataDog/sketches-go for the reference implementation

Implementations

impl DDSketch

pub fn ordered_bins(&self) -> Vec<(f64, f64)>

Return an iterator over (value, weight) pair for each bin

pub fn count(&self) -> f64

pub fn add(&mut self, point: f64) -> Result<(), Box<dyn Error>>

Add a point with value point to the sketch point must be positive

pub fn add_with_count( &mut self, point: f64, count: f64, ) -> Result<(), Box<dyn Error>>

Add count point with value point to the sketch count and point must be positive

pub fn into_pb(self) -> DdSketch

Return a protobuf of the sketch

pub fn encode_to_vec(self) -> Vec<u8>

Return a serialized protobuf of the sketch

Trait Implementations

impl Clone for DDSketch

fn clone(&self) -> DDSketch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DDSketch

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

Formats the value using the given formatter.

impl Default for DDSketch

fn default() -> DDSketch

Returns the “default value” for a type.