Re: [boost] BOOST_ENUM proposal

From: Larry Evans (cppljevans_at_[hidden])
Date: 2005-12-07 08:27:15

On 12/07/2005 05:47 AM, Frank Laub wrote:
> Hello fellow boosters,
> 
> I've recently come up with a way to use the boost preprocesor to generate a
> 'better' enum type. The following is an example of some typical usage.  Is
> anyone else interested in this sort of thing? I'm hoping to get suggestions

I'm interested.

> for how to make it more 'boost-like' in both its implementation and its
> usage. Is this very readable?  Is there a place I can upload the code for
> people to peruse?

The boost file vault:

   http://boost-consulting.com/vault/

under the 'Preprocessor Metaprogramming' directory.
> 
> #include <iostream>
> #include <boost/enum.hpp>
> #include <boost/foreach.hpp>
> #define foreach BOOST_FOREACH
> 
> BOOST_ENUM(Level,
>     (Abort)("unrecoverable problem")
>     (Error)("recoverable problem")
>     (Alert)("unexpected behavior")
>     (Info)("expected behavior")
>     (Trace)("normal flow of execution")
>     (Debug)("detailed object state listings")
> )
> 
> int main()
> {
>     foreach(const string& name, Level::names)
>     {
>         cout << name << endl;
>     }
[snip]
Tha above looks great, and I remember, several weeks or months
ago, there was a request for just such a utility on
comp.lang.c++.moderated.

Thanks.