如何使生锈持续时间没有数字计算

Question

I using this code to do an interval in rust:

use std::time::Duration;
use tokio::time;

#[tokio::main]
async fn main() {
    let mut interval = time::interval(Duration::from_millis(10000));
    loop {
        interval.tick().await;

        println!("{}","trigger")
    }
}

when I want to set the interval to 1 hour, I have to write the Duration like this 1000 * 60 * 60 . is there any simple way just like Duration::hours(1) ? I have tried the chrono but seems is not compatible with tokio.

Answer 1

You can use an extension trait to implement hours() on Duration

use std::time::Duration;
use tokio::time;

trait DurationExt {
    fn from_hours(hours: u64) -> Duration;
}

impl DurationExt for Duration {
    fn from_hours(hours: u64) -> Duration {
        Duration::from_secs(hours * 60 * 60)
    }
}

#[tokio::main]
async fn main() {
    let mut interval = time::interval(Duration::from_hours(1));
    loop {
        interval.tick().await;

        println!("{}","trigger")
    }
}