Why no multiple-dispatch?

[via Digitalmars-d-learn]

On Monday, 25 August 2014 at 17:28:45 UTC, Ola Fosheim Grøstad 
wrote:
> Then extend the typeinfo of classes in the first param with a 
> minimal typeid and 2D table that lists all combinations that 
> the "custom linker" can find based on the mangling?

Maybe it would be better to put in the restriction that all 
double-dispatch functions with the same name are located in the 
same file.