Rust program to parse the date-time from RFC 2822 string

Rust | Date & Time Example: Write a program to parse the date-time from RFC 2822 string.
Submitted by Nidhi, on November 10, 2021

Problem Solution:

In this program, we will parse date-time from RFC 2822 string using parse_from_rfc2822() function and print the result.

Add Chrono date-time external library to your project

Create your project using the below command.
```
$cargo new datetime -bin
```
Goto the project folder cd datetime and edit Cargo.toml file.
```
$datetime>nano Cargo.toml
```
Then add dependency in Cargo.toml file
```
[dependencies]
chrono = "0.4"
```
After that, build your project using the below command
```
$datetime>cargo build
```
Then execute your project after modification in src/main.rs source file.
```
$datetime>cargo run
```

Program/Source Code:

The source code to parse date-time from RFC 2822 string is given below. The given program is compiled and executed on UBUNTU 18.04 successfully.

// Rust program to parse date-time 
// from RFC 2822 string

use chrono::{DateTime, NaiveDate, NaiveDateTime, NaiveTime};
use chrono::format::ParseError;

fn main() -> Result<(), ParseError> {
    let result = DateTime::parse_from_rfc2822("Sat, 30 Oct 2021 11:47:18 +0200")?;
    println!("Result: {}", result);
    Ok(())
}

Output:

$datetime> cargo run
   Compiling datetime v0.1.0 (/home/arvind/Desktop/rust/datetime)
    Finished dev [unoptimized + debuginfo] target(s) in 0.26s
     Running `target/debug/datetime`

Result: 2021-10-30 11:47:18 +02:00

Explanation:

In the above program, we imported the "Chrono" library to our project for performing date and time operations. We imported the Chrono library using the below line:

use chrono::Utc;

In the main() function, we called the DateTime::parse_from_rfc2822() function to parse the RFC 2822 string into date-time and printed the result.