Struct Subscribe 

pub struct Subscribe<E: Event, T: Topic<E>>(/* private fields */);

Specifies which topics an actor subscribes to.

Use the static constructors to create subscriptions:

• Subscribe::all() - receive events on all topics (e.g., monitoring actors)
• Subscribe::none() - receive no events (e.g., pure event producers)
• Subscribe::to - receive events on specific topics

For convenience, &[T] converts to Subscribe automatically:

// These are equivalent:
sup.add_actor("a", factory, &[Topic::Data])?;
sup.add_actor("a", factory, Subscribe::to([Topic::Data]))?;

Implementations

impl<E: Event, T: Topic<E>> Subscribe<E, T>

pub fn all() -> Self

Subscribe to all topics.

Useful for monitoring actors that need to observe all events.

pub fn none() -> Self

Subscribe to no topics.

Useful for actors that only produce events and don’t need to receive any.

pub fn to(topics: impl IntoIterator<Item = T>) -> Self

Subscribe to specific topics.

Accepts any iterator of topics:

Subscribe::to([Topic::A, Topic::B])
Subscribe::to(vec![Topic::A])
Subscribe::to(&[Topic::A, Topic::B])

Trait Implementations

impl<E: Event, T: Topic<E>> From<&[T]> for Subscribe<E, T>

fn from(topics: &[T]) -> Self

Converts to this type from the input type.

impl<E: Event, T: Topic<E>, const N: usize> From<&[T; N]> for Subscribe<E, T>

fn from(topics: &[T; N]) -> Self

Converts to this type from the input type.

impl<E: Event, T: Topic<E>, const N: usize> From<[T; N]> for Subscribe<E, T>

fn from(topics: [T; N]) -> Self

Converts to this type from the input type.