```rust use asyncstatic::asyncstatic;
async fn get_num() -> i32 { println!("hello world"); 123 }
asyncstatic! { static ref FOO:i32 = getnum().await; }
/// run print
///
/// hello world
/// The result of the first call: 123
/// The result of the second call: 123
///
async fn test() { // The first call, print hello world let n = FOO.await; println!("The result of the first call: {}", n);
// The second call, nothing print
let n = FOO.await;
println!("The result of the second call: {}", n);
} ```
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