Trait Subscription 

pub trait Subscription
where
    Self: PartialEq,
{
    type Event: Message;

    // Required methods
    fn subscribed_to(&self, message: &Self::Event) -> bool;
    fn discriminant_set(&self) -> &[<Self::Event as Message>::Discriminant];
    fn send_event(
        &self,
        message: Self::Event,
    ) -> Result<(), SendError<Self::Event>>;
}

A trait describin a bus subscription

Required Associated Types

type Event: Message

Required Methods

fn subscribed_to(&self, message: &Self::Event) -> bool

Test whether this subscriiption is subscribed to a message

fn discriminant_set(&self) -> &[<Self::Event as Message>::Discriminant]

Returns a slice of discriminants corresponding to messages this subsccription is subscribed to

fn send_event(&self, message: Self::Event) -> Result<(), SendError<Self::Event>>

Delivers a message to this subscription’s reciever

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<M> Subscription for Subscriber<M>

where M: Message + Debug,

type Event = M