Re: [boost] Is there any interest in tagged tuple?

From: Joel de Guzman (joel_at_[hidden])
Date: 2005-06-27 06:48:09

Pavel Chikulaev wrote:
> Hi all,
> 
> Is there any interest in tagged tuple as extension of tuples library or fusion 
> library?
> The example:
> 
> struct name_t {}; //tagged types
> struct year_t {};
> 
> void foo()
> {
>      tagged_tuple<std::string, name_t, int, year_t> s;
> 
>      s.get<name_t>() = "Hello World"!;
>      s.get<year_t>()   = 2005;
>      assert(s.get<0>() == s.get<name_t>());
>      assert(s.get<1>() == s.get<year_t>());
> }
> 
> It already works in VC7.1 and VC8.0 :)
> 
> What do you think?

Hi,

The plan for fusion is to have a set and map associative
tuples. Your tagged_tuple is very similar to a fusion::map.

Cheers,
-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net