Module join 

Structured concurrency primitives.

[join!] and [try_join!] poll multiple futures concurrently until all complete. try_join! returns early on the first error.

use leodos_libcfs::join;
use leodos_libcfs::try_join;

let (a, b) = join!(fut_a, fut_b).await;
let (a, b) = try_join!(fut_a, fut_b).await?;