A Future
in Rust is an abstraction for a value that may not yet be available. Understanding how futures work is crucial to mastering async programming in Rust.
use std::future::Future;
fn my_future() -> impl Future<Output = i32> {
async {
// Simulate some asynchronous computation
42
}
}
async fn main() {
let result = my_future().await;
println!("The answer is {}", result);
}