Getting whether it's Tango or Phobos

[Robert Fraser]

Bill Baxter wrote:
> Robert Fraser wrote:
>> Is there a reliable way to deduce whether the user is using Tango or 
>> Phobos? I used to use:
>>
>> static if(is(typeof(object.toUtf8)))
>>
>> But since that got changed to toString that doesn't work right now. 
>> For the time being, I can verify it's D1 and then use (with Tango 0.99.6)
>>
>> static if(!is(typeof(string)))
>>
>> But I'm guessing Tango may be given a string type soon...?
> 
> version(Tango) { ... } else { ... }  ?
> 
> --bb

That requires the user to specify -version=Tango . I'm looking for 
something that can be compiled with either Tango or Phobos without 
asking anything of the user.