Don: > Just use a delegate literal (with a fix to 5081).
This doesn't seem to satisfy two of the things I've written in the original post: > - On the stack too, avoiding slower heap allocations and avoiding copying > them from the mutable to the immutable version; > - Avoiding calls to functions that may contain loops that DMD doesn't inline; I don't think a delegate solves the problem. Bye, bearophile
