Struct IncrementalEma 

pub struct IncrementalEma { /* private fields */ }

Incremental EMA — O(1) update per tick that returns the new value each call.

Unlike EMA (which separates update from value/is_ready), this seeds from the first sample and returns the EMA on every update, which suits streaming pipelines that consume the value inline.

Implementations

impl IncrementalEma

pub fn new(period: usize) -> Self

Create an incremental EMA for the given period.

pub fn update(&mut self, price: f64) -> Option<f64>

Feed the next price; returns the updated EMA. Always Some — the EMA seeds from the first price — but Option-shaped to match the warm-up contract shared by all incremental structs.

pub fn current(&self) -> Option<f64>

Current EMA value, or None before the first update.

Trait Implementations

impl Clone for IncrementalEma

fn clone(&self) -> IncrementalEma

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IncrementalEma

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

Formats the value using the given formatter.