Nick Sabalausky wrote:
Custom bitfields are extremely useful for low-level code. Being a
self-proclaimed "systems" language, there's no reason D should consider such
a thing to be of "narrow-usefulness".
I've written a lot of low-level code, I even programmed Mattel Intellivision
cartridges and one of those old 70's hand-held LED games (Mattel Soccer). I've
done a lot of embedded 6800 microprocessor work, device drivers, graphics
drivers, etc. I've done a lot of bit twiddling code.
But I find C bit fields to be generally worthless.
One reason is the standard requires them to be right justified after extraction.
This kills performance. I muck with with them in-place using biased arithmetic.
