DIP66 - Multiple alias this

[via Digitalmars-d]

You should rethink implementing multiple alias this. D is 
increasingly becoming a poorly typed language.

"alias this" is basically static prototype-based programming.

http://en.wikipedia.org/wiki/Prototype-based_programming

Self had multiple inheritance based on prototypes and removed it 
because it was not much used and lead to problems when figuring 
out which methods were called.