Function rsmorphy::shapes::is_latin

pub fn is_latin(token: &str) -> bool

Return True if all token letters are latin and there is at least one latin letter in the token:

use rsmorphy::shapes::is_latin;

assert!(is_latin("foo"));
assert!(is_latin("123-FOO"));

assert!(!is_latin("123"));
assert!(!is_latin(":)"));
assert!(!is_latin(""));