Squeak

Squeak is a zero-dependency Rust library to facilitate event-driven programming.

Examples

use squeak::{Delegate,Response};let on_damage_received = Delegate::new();
on_damage_received.subscribe(|amount| {println!("Received {amount} damage");Response::StaySubscribed});
on_damage_received.broadcast(16);// Prints "Received 16 damage"
on_damage_received.broadcast(14);// Prints "Received 14 damage"
on_damage_received.broadcast(28);// Prints "Received 28 damage"

use squeak::{Observable,Response};letmut health = Observable::new(100);
health.subscribe(|updated_health| {println!("Health is now {updated_health}");Response::StaySubscribed});
health.mutate(|h| *h -= 10);// Prints "Health is now 90"
health.mutate(|h| *h -= 5);// Prints "Health is now 85"
health.mutate(|h| *h += 25);// Prints "Health is now 110"