format a date in to the format october 13, 2014 11:13:00.000 am in rust

To format a date in Rust, you can use the chrono crate. First, you need to parse the date string into a DateTime object. Then, you can use the format method to format the date according to your desired format string. Here's an example:

main.rs
use chrono::{DateTime, Local, TimeZone};

fn format_date(date_string: &str) -> String {
    let date_time = Local.datetime_from_str(date_string, "%Y-%m-%d %H:%M:%S%.3f").unwrap();
    date_time.format("%B %e, %Y %r").to_string()
}

fn main() {
    let date_string = "2014-10-13 11:13:00.000";
    let formatted_date = format_date(date_string);
    println!("Formatted date: {}", formatted_date);
}
398 chars
13 lines

In this example, the format_date function takes a date string in the format "YYYY-MM-DD HH:MM:SS.sss" as input. It then parses the string into a DateTime object using the datetime_from_str method of Local (which represents the local time zone). The second argument to datetime_from_str is a format string that specifies the expected format of the input string.

Once we have the DateTime object, we can call its format method to format it according to our desired format string. In this case, we're using the format string " %B %e, %Y %r", which will produce output in the format "Month Day, Year Time AM/PM".

Finally, we call the to_string method on the formatted DateTime object to convert it to a String. This string is returned by the format_date function and can be printed to the console.

Note that in this example, we're assuming that the input date string is in the local time zone. If the input string is in a different time zone, you may need to adjust the parsing and formatting code accordingly.