Re: Beginner design question

> Hello,
> 
> I have to make a library which provides a few classes with 
> different implementation. This classes should have a common 
> interface. Normally I would use derived classes from the 
> common interface, but this classes should be really fast.
> What is the best way to provide a common interface and to not 
> have the overhead of polymorphic classes?
> 
> Best regards
> Hansjörg

I don't know about "fast", but you can use templates and specify the interface by concepts with Boost
Concept Check Library (BCCL), or you could google CRTP. 

--John