[jasonwatkinspdx]

> it's hard to think of how you would improve on the actual underlying design.

I think ranges are part of D's design they got right, and I think a similar abstraction would be in line with golang's general design ethos, GC design, etc, other than perhaps some folks might pattern match it as "this is like STL therefor bad burn it with fire etc" without actually thinking about it in detail.