如何使用 Chrono 库获取秒数？

Question

I can get the date, the hours, minutes, seconds and nanoseconds in the date format, but I can't get seconds as a floating point or integer number.

extern crate chrono;
use chrono::prelude::*;
fn main() {
    let local: DateTime<Local> = Local::now();
    println!("{}", local); 
} 

I have already read the docs.

Answer 1

Use Timelike::second :

extern crate chrono;

use chrono::prelude::*;

fn main() {
    let local: DateTime<Local> = Local::now();
    println!("{}", local.second()); 
} 

Answer 2

I solved the problem using the function timestamp as written in the docs. It didn't work before because I forgot to use the brackets to call timestamp .

extern crate chrono;

use chrono::prelude::*;

fn main() {
    let local: DateTime<Local> = Local::now();
    println!("{}", local.timestamp()); // I forgot the brackets after timestamp
}

Thanks to mcarton .