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/// Create a statically allocated slice of any type. /// /// This macro allows you to define static slices in much the same way as static strings. /// /// ```ignore /// let static_string: &'static str = "yay!"; /// let static_u8s: &'static [u8] = static_slice![u8: 1, 2, 3]; /// ``` /// /// This can be useful for return lots of static slices in a match. #[macro_export] macro_rules! static_slice { ($_type:ty: $($item:expr),*) => ({ static STATIC_SLICE: &'static [$_type] = &[$($item),*]; STATIC_SLICE }); } #[cfg(test)] mod test { #[allow(unused)] fn fn_return() -> &'static [u8] { static_slice![u8: 1, 2, 3] } #[test] fn multiple_slices() { let s1 = static_slice![u8: 1, 2, 3]; let s2 = static_slice![u8: 1, 2, 3, 4]; assert_eq!(s1, s2.slice_to(3)); } }