Macro pack_table 

pack_table!() { /* proc-macro */ }

Pack a table of integers into compact multi-level lookup tables at compile time.

Example

packtab_macro::pack_table! {
    pub fn lookup(u: usize) -> u8 {
        data: [1, 2, 3, 4, 5, 6, 7, 8],
        default: 0,
    }
}