Struct RingBuffer 

pub struct RingBuffer<T> { /* private fields */ }

Ring buffer for time-series data.

Implements the ttop pattern for efficient sliding window storage. Oldest values are evicted when capacity is reached.

Example

use probar::brick::tui::RingBuffer;

let mut buf: RingBuffer<f32> = RingBuffer::new(60);
for i in 0..100 {
    buf.push(i as f32);
}
assert_eq!(buf.len(), 60);
assert_eq!(*buf.last().unwrap(), 99.0);

Implementations

impl<T> RingBuffer<T>

pub fn new(capacity: usize) -> Self

Create a new ring buffer with given capacity.

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

Push a value, evicting oldest if at capacity.

pub fn iter(&self) -> impl Iterator<Item = &T>

Get iterator over values (oldest first).

pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut T>

Get mutable iterator over values.

pub fn len(&self) -> usize

Get number of elements.

pub fn is_empty(&self) -> bool

Check if buffer is empty.

pub fn capacity(&self) -> usize

Get capacity.

pub fn last(&self) -> Option<&T>

Get most recent value.

pub fn first(&self) -> Option<&T>

Get oldest value.

pub fn get(&self, index: usize) -> Option<&T>

Get value at index (0 = oldest).

pub fn clear(&mut self)

Clear the buffer.

pub fn is_full(&self) -> bool

Check if buffer is at capacity.

impl<T: Clone> RingBuffer<T>

pub fn to_vec(&self) -> Vec<T>

Make buffer contiguous and return as Vec.

impl<T: Copy + Default> RingBuffer<T>

pub fn fill_default(&mut self)

Fill with default values to capacity.

impl<T: Copy + Into<f64>> RingBuffer<T>

pub fn average(&self) -> f64

Calculate average of all values.

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

Calculate min value.

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

Calculate max value.

Trait Implementations

impl<T: Clone> Clone for RingBuffer<T>

fn clone(&self) -> RingBuffer<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for RingBuffer<T>

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

Formats the value using the given formatter.