Function clean_url::utils::has_www

pub async fn has_www<'_>(url: &'_ str) -> bool

Checks if a URL uses www

Usage:

use clean_url::utils::has_www;
use tokio_test::block_on;

assert_eq!(true, block_on(has_www("http://www.example.com")));
assert_eq!(false, block_on(has_www("http://example.com")));

//assert_eq!(String::from("http://www.example.com"), swap_www("http://example.com"));
//assert_eq!(String::from("http://example.com"), swap_www("http://www.example.com"));