Version declaration proposal

[Don]

Steve Schveighoffer wrote:
> On Wed, 11 Feb 2009 09:01:29 +0100, Don wrote:
> 
>> I think I have a solution to the versioning problems. My belief is that
>> version statements are fine, and Walter's 'rats nest' argument is valid.
>> Instead, I believe that version declarations limited to "version = XXX;"
>> are too weak. They also have syntax which is subtly different to the
>> rest of the language. (version = A; version = B; looks as though you're
>> changing the value of the 'version' variable).
>> My proposal is therefore:
>>
>> --------
>> * Keep version statements unchanged.
>> * Change version declarations to make them almost identical to bool
>> declarations:
>>
>> version _versionidentifier_ = _versionexpression_;
>>
> 
> 
> I like this idea.  I had one similar last night, but you beat me to it ;)
> 
> My idea was going to be something that is similar to the current version 
> statements:
> 
> version = _expression_ ? _identifier_ [ : _elseidentifier_ ]
> 
> Where the [...] is optional.
> 
> But your way looks cleaner.
> 
> Not in love with the version x = extern notation ...

Me neither. Of the two options I presented, I've decided I prefer
extern version x;