Fragile ABI

[R Grocott]

On Monday, 20 August 2012 at 15:26:48 UTC, Kagamin wrote:
> What you ask for sounds quite similar to COM composition with 
> delegation.

Would anybody mind linking to resources which describe COM 
composition with delegation? It's been suggested twice in this 
thread as an alternative way to develop a non-fragile API, but 
anything related to COM is almost invisible to search engines 
(even moreso than D itself).