use futures::future;
use std::error::Error;
use tokio::task::JoinHandle;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
  tokio::spawn(async move {
    let mut handles: Vec<JoinHandle<()>> = Vec::new();

    for a in 1..5 {
      let handle = tokio::spawn(async move {
        println!("Got {}", a);
      });

      handles.push(handle);
    }

    future::join_all(handles).await;
  })
  .await
  .unwrap();

  println!("done!");

  Ok(())
}