DMD can implicitly convert class pointer to the bool. Is it bug or terrible feature?

[Chris Cain]

On Tuesday, 26 November 2013 at 07:34:26 UTC, ilya-stromberg 
wrote:
> I repeat, sorry if I didn't explain idea properly, see:
> http://forum.dlang.org/thread/mydipbvhfjgvjybcyeyn@forum.dlang.org?page=6#post-sffdyogipcanorahdtte:40forum.dlang.org

Like Maxim explained, it's a breaking change to force it. 
Unfortunately, that just can't be done. This is one of those 
kinds of things that is self policing. If you really want to know 
when something is global when you use it then use g prepended 
before your global names. That's what a lot of people do to avoid 
this type of issue.