Struct CustomChannel 

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

Custom channel: hold a value of type T plus user-supplied write, read, and reset closures. Implements Channel (with a custom kind label) and is therefore registry-compatible alongside the stock channels.

Use this when none of the built-in channels match your semantics but you don’t want a whole new struct + trait impl.

Implementations

impl<T: Default> CustomChannel<T>

pub fn new<F>(label: &'static str, on_write: F) -> Self

where F: Fn(&mut T, T) + Send + Sync + 'static,

Build with a label, initial value, and a write(slot, incoming) merge function.

impl<T> CustomChannel<T>

pub fn with_initial<F>(label: &'static str, initial: T, on_write: F) -> Self

where F: Fn(&mut T, T) + Send + Sync + 'static,

Build with explicit initial value.

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

Apply an incoming write through the user-defined merge fn.

pub fn get(&self) -> &T

Borrow the current value.

pub fn get_mut(&mut self) -> &mut T

Mutably borrow the current value.

pub fn replace(&mut self, new: T) -> T

Replace the wrapped value, returning the previous one.

Trait Implementations

impl<T: Send + Sync> Channel for CustomChannel<T>

fn kind(&self) -> &'static str

Channel kind label, e.g. "AnyValue", "Topic".

impl<T: Debug> Debug for CustomChannel<T>

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

Formats the value using the given formatter.