format a date in to the format 'yyyy-mm-dd' in rust

You can use the Chrono crate in Rust for working with dates and times. To format a date in the 'yyyy-mm-dd' format, you can use the format method on a NaiveDate instance.

Here is an example code snippet that shows how to format a date in the 'yyyy-mm-dd' format using Chrono:

main.rs
use chrono::{NaiveDate, ParseError};

fn main() -> Result<(), ParseError> {
    let date_str = "2021-01-01";
    let date = NaiveDate::parse_from_str(date_str, "%Y-%m-%d")?;
    let formatted_date = date.format("%Y-%m-%d").to_string();

    println!("Formatted date: {}", formatted_date); // Output: Formatted date: 2021-01-01

    Ok(())
}
341 chars
12 lines

In this example, we start by importing the necessary modules from Chrono. We then parse a date string using NaiveDate::parse_from_str, which returns a NaiveDate instance. We then use the format method on this instance to format the date string in the desired format. Finally, we print the formatted date string to the console.