Struct Hold 

#[repr(transparent)]
pub struct Hold<T>(pub T);

Zero-order hold over optional input samples.

Some(x) updates the held value, while None repeats the previous one. This is useful for interpolation pipelines and event-driven sample streams.

Together with Downsample, this forms the scalar optional-sample pair: Downsample creates gaps by emitting None, while Hold turns those gaps back into a continuous stream by repeating the last present sample.

At the chunk level, Interpolator plays the analogous role for turning a scalar stream into chunk output.

Examples

use dsp_process::{Hold, Process};

let mut hold = Hold(5);
assert_eq!(hold.process(None), 5);
assert_eq!(hold.process(Some(7)), 7);
assert_eq!(hold.process(None), 7);

Tuple Fields

0: T

Trait Implementations

impl<T: Clone> Clone for Hold<T>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Copy> Copy for Hold<T>

impl<T: Debug> Debug for Hold<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Hold<T>

fn default() -> Hold<T>

Returns the “default value” for a type.

impl<T: Copy> Process<Option<T>, T> for Hold<T>

fn process(&mut self, x: Option<T>) -> T

Update the state with a new input and obtain an output

fn block(&mut self, x: &[X], y: &mut [Y])

Process a block of inputs into a block of outputs