Struct ChangeDetector 

pub struct ChangeDetector { /* private fields */ }

Significant change detector (trueno-viz pattern)

Detects when a value has changed significantly from a baseline. Uses both absolute and relative thresholds.

Implementations

impl ChangeDetector

pub fn new(baseline: f64, abs_threshold: f64, rel_threshold: f64) -> Self

Create a new change detector

Arguments

• baseline - Initial baseline value
• abs_threshold - Absolute change required to trigger
• rel_threshold - Relative change (%) required to trigger

pub fn for_percentage() -> Self

Create for percentage monitoring (1% absolute, 5% relative)

pub fn for_latency() -> Self

Create for latency monitoring (1ms absolute, 10% relative)

pub fn has_changed(&self, value: f64) -> bool

Check if value has changed significantly (O(1))

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

Update with new value and return whether it changed significantly (O(1))

pub fn update_baseline(&mut self)

Update baseline to current value (O(1))

pub fn set_baseline(&mut self, baseline: f64)

Set baseline to specific value (O(1))

pub fn baseline(&self) -> f64

Get current baseline

pub fn last_value(&self) -> f64

Get last value

pub fn change_count(&self) -> u64

Get change count

pub fn change_from_baseline(&self) -> f64

Get change from baseline

pub fn relative_change(&self) -> f64

Get relative change from baseline (percentage)

pub fn reset(&mut self)

Reset detector

Trait Implementations

impl Clone for ChangeDetector

fn clone(&self) -> ChangeDetector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChangeDetector

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

Formats the value using the given formatter.

impl Default for ChangeDetector

fn default() -> Self

Returns the “default value” for a type.