Is all this Invarient **** er... stuff, premature optimisation?

[Walter Bright]

Me Here wrote:
> Just as the answer to the occasional hit-and-run death is not banning 
> cars, so fixing unintentional aliasing in threaded applications does not 
> lie in forcing all character arrays to be immutable.

D does not force all character arrays to be immutable. You can use 
mutable ones by declaring them as:

	char[]

Reference types all come in 3 flavors: mutable, read-only-view-of (i.e. 
const) and invariant.