Function accept_language::intersection_with_quality

pub fn intersection_with_quality(
    raw_languages: &str,
    supported_languages: &[&str]
) -> Vec<(String, f32)>

Similar to intersection but with the quality as f32 appended for each language. This enables distinction between the default language of a user (value 1.0) and the best match. If you don’t want to assign your users immediatly to a non-default choice and you plan to add more languages later on in your webserver.

Example

use accept_language::intersection_with_quality;

let common_languages = intersection_with_quality("en-US, en-GB;q=0.5", &["en-US", "de", "en-GB"]);
assert_eq!(common_languages,vec![(String::from("en-US"), 1.0), (String::from("en-GB"), 0.5)])