Struct DerivativeTracker 

pub struct DerivativeTracker { /* private fields */ }

First derivative (rate of change) tracker (trueno-viz pattern)

Tracks instantaneous and smoothed rate of change for metrics. Useful for detecting acceleration/deceleration in CPU, memory, etc.

Implementations

impl DerivativeTracker

pub fn new() -> Self

Create a new derivative tracker with default smoothing (0.3)

pub fn with_alpha(alpha: f64) -> Self

Create with custom smoothing factor

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

Update with new value (O(1))

pub fn update_with_dt(&mut self, value: f64, dt_secs: f64)

Update with explicit delta time (for testing)

pub fn derivative(&self) -> f64

Get instantaneous derivative (O(1))

pub fn smoothed(&self) -> f64

Get smoothed derivative (O(1))

pub fn is_accelerating(&self) -> bool

Check if accelerating (positive derivative)

pub fn is_decelerating(&self) -> bool

Check if decelerating (negative derivative)

pub fn count(&self) -> u64

Get sample count

pub fn reset(&mut self)

Reset tracker

Trait Implementations

impl Clone for DerivativeTracker

fn clone(&self) -> DerivativeTracker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DerivativeTracker

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

Formats the value using the given formatter.

impl Default for DerivativeTracker

fn default() -> Self

Returns the “default value” for a type.