byte and short data types use cases

[Salih Dincer]

On Friday, 9 June 2023 at 23:51:07 UTC, Basile B. wrote:
> Yes, a classsic resource is 
> http://www.catb.org/esr/structure-packing/
>
>> So you can optimize memory usage by using arrays of things 
>> smaller than `int` if these are enough for your purposes,

So, is the sorting correct in a structure like the one below with 
partial overlap?

```d
struct DATA
{
     union
     {
         ulong bits;
         ubyte[size] cell;
     }
     enum size = 5;
     bool last;
     alias last this;

     size_t length, limit, index = ulong.sizeof;

     bool empty()
     {
         return index / ulong.sizeof >= limit; }

     ubyte[] data;
     ubyte front()
     {
         //..
```
This code snippet is from an actual working my project.  What is 
done is to process 40 bits of data.

SDB at 79