Re: [boost] Visitation using RTTI

From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2008-03-28 17:51:12

Stefan Seefeld wrote:

> I agree. And, some simpler templating techniques may be used to map the 
> current helt type discriminator to the (C++) type, thus dispatching 
> calls by other means than what is typically referred to as 'visitation'.

What techniques?

There is certainly the Visitor design pattern, but that's intrusive and 
that doesn't provide generic visitation.

> (I still fail to appreciate the usefulness of those compile-time static 
> strings. I find them rather ugly...)

If you want to compute something on a string at compile-time, you need a 
compile-time string.

Here, it is needed to mangle the possibles names at compile-time and 
build an automaton to recognize the mangled name RTTI provides.

With a regular string, you would have to mangle the name at runtime, 
then do a linear search within the possible cases.