Macro icu_locid::extensions_unicode_key

macro_rules! extensions_unicode_key {
    ($key:literal) => { ... };
}

A macro allowing for compile-time construction of valid Unicode Key subtag.

The macro will perform syntax canonicalization of the tag.

Examples

use icu::locid::extensions::unicode::{Key, Value};
use icu::locid::{extensions_unicode_key as key, extensions_unicode_value as value};
use icu::locid::Locale;

const CALENDAR_KEY: Key = key!("ca");
const CALENDAR_VALUE: Value = value!("buddhist");

let loc: Locale = "de-u-ca-buddhist".parse().unwrap();

assert_eq!(
    loc.extensions.unicode.keywords.get(&CALENDAR_KEY),
    Some(&CALENDAR_VALUE)
);