async-internal-spawn.rs

use async_std::task;

fn main() {
    task::block_on(async move {
        println!("outer");
        
        task::spawn(async move {
            println!("inner 1");
        });
        
        task::spawn(async move {
            task::sleep(std::time::Duration::from_secs(1)).await;
            println!("inner 2");
        })
        .await; // without this, will finish the main block before the tasks are executed
    })
}

Cargo.toml

[package]
name = "async-internal-spawn"
version = "0.1.0"
authors = ["Ryan James Spencer <[email protected]>"]
edition = "2018"

[dependencies.async-std]
version = '1.6.2'
features = ['unstable']