Uh... destructors?

[%u]

> D pure functions are significantly different than this definition
(as of recent times, when weak-pure was added).
> Essentially, a pure function cannot access global variables.
However, it can access variables referred to via a member of the
object instance.
> i.e. this is a valid pure function:
class C
{
   int x;
   pure void foo() { x++; }
}

I... did not know that. But even in that case, pure wouldn't make much
sense, because doing anything like freeing memory or closing a file
handle affects global variables (whether directly in the runtime or
indirectly in the OS)... right?