Generally in C++ this kind of data transformation faces a lot of barriers. For example, the language semantics require struct fields to have the unoptimized mem

Generally in C++ this kind of data transformation faces a lot of barriers. For example, the language semantics require struct fields to have the unoptimized memory layout and contents as far as the user can observe at the byte level. Low-level programming would be quite a different scene if there were a lot of permitted data optimizations by compilers (profile guided more concise representations of structs, replacing pointer based data structures with indexed layouts, etc).