Re: enum sets

fir wrote:

- i was also inspired by
   concept of interface - is used in some languages (and such form of
   this interface it looks like structure of data and function calls)

honestly i dont remember in which language i seen those interfaces,
it could be something like D or GO - some not much popular language..
strictly im not sure is somewhere people not did already this "polymorphism" right way (bit i would probably heard, though
as i not read on programmking language news its also technicaly
possible some did something here also) (it seems to me tha flaw of
c++ like polymorphism is not spotted though or at least not
sa much as i said )