Out of order execution

[Rene Zwanenburg via Digitalmars-d-learn]

On Thursday, 16 June 2016 at 01:57:19 UTC, Joerg Joergonson wrote:
> Is there an efficient lazy way to make this happen?

No, I don't see how that would work.

> Suppose I can't run the loop twice for performance 
> reasons(there is other stuff in it) and I don't want to store 
> the state and call info then sort them out afterwards.

Storing the state is your best bet. Based on your recent post 
about OpenGL I assume this is for the same project?

If so, you can reuse the storage buffer between frames. Generally 
speaking it's the allocations that are slow, copying some state 
to a buffer shouldn't be expensive. Use separate buffers for the 
Do1 and Do2 calls so you don't have to sort.