Trait Message

pub trait Message: 'static + Send {
    type Response: 'static + Send;
}

Expand description

Anything that you want to send to an actor.

Messages can have a response type like Ping and Pong in the following example.

#[message(response = Pong)]
struct Ping;

struct Pong; // does not need to implement `Message`

Or they can be fire-and-forget messages like Stop in the following example.

#[message]
struct Store(&'static str);

You can also derive the Message trait for simple messages without a response.

#[derive(Debug, Message)]
struct Store(&'static str);

Required Associated Types§

What the actor should respond with.

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".