macro_rules! add_static_file_mask {
($mask_struct:tt, $type1:ty, $mask:expr) => { ... };
($mask_struct:tt, $type1:ty, $type2:ty, $mask:expr) => { ... };
($mask_struct:tt, $type1:ty, $type2:ty, $type3:ty, $mask:expr) => { ... };
}
Expand description
Add mask to select N
column values from a specific static file segment row.