Macro icu::locid::extensions_transform_key

macro_rules! extensions_transform_key {
    ($string:literal) => { ... };
}

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

Examples

Parsing errors don’t have to be handled at runtime:

assert_eq!(
  icu_locid::extensions_transform_key!("k0"),
  "k0".parse::<icu_locid::extensions :: transform :: Key>().unwrap()
);

Invalid input is a compile failure:

icu_locid::extensions_transform_key!("");

Key: crate::extensions :: transform :: Key