Vectors and matrices in D

[Frits van Bommel]

Jascha Wetzel wrote:
> ok, the const part is missing, but the performance part can be dealt
> with. maybe "const inout" is a worthwhile feature for future D versions.
> it should have a less contradictory name, though.

Hey, no fair correcting yourself before I finish my post! ;)

Seriously: as I mentioned in my post there was some discussion a while 
back about adding this sort of stuff, but so far nothing concrete has 
shown up.