dbuff 0.1.0

Double-buffered state with async command chains, streaming, and keyed task pools for ratatui applications
Documentation 
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use dbuff::*;
use std::time::Duration;

#[derive(Debug, Clone, Default)]
struct AppData {
    counter: i32,
}

#[derive(Debug, Clone, wherror::Error)]
#[error(debug)]
struct IncrError;

struct Increment;

#[async_trait::async_trait]
impl Command<()> for Increment {
    type Output = i32;
    type Error = IncrError;

    async fn execute(self, _: ()) -> Result<Self::Output, Self::Error> {
        Ok(1)
    }
}

#[tokio::main]
async fn main() {
    let rt = tokio::runtime::Handle::current();
    let (domain, write_handle) =
        SharedDomainData::with_coalesce(AppData::default(), Duration::from_micros(500));
    tokio::spawn(write_handle.run());

    // High-level API: domain-bound executor with inline setter
    domain.bind((), rt.clone())
        .exec(Increment, |d, v: &i32| d.counter += *v)
        .go_detach();

    tokio::time::sleep(Duration::from_millis(10)).await;

    let guard = domain.read();
    assert_eq!(guard.counter, 1);
    println!("counter = {}", guard.counter);
}