Toward a better list iterator for the kernel

Basically, anywhere you are hardware-constrained (and an OS is a perfect example) you need to be very careful about knowing exactly what abstractions the compiler is using. C++ makes this rather tricky!

Once you're in user space, especially if you're in an online state (ie the computer is a lot faster than the person behind the keyboard), you no longer need to worry and can use the full power of C++. Just make sure you don't use the bits you don't understand :-)

Cheers,
Wol