Re: [boost] [preprocessor] Maybe a improvement of BOOST_PP_IS_EMPTY

Subject: Re: [boost] [preprocessor] Maybe a improvement of BOOST_PP_IS_EMPTY
From: Edward Diener (eldiener_at_[hidden])
Date: 2012-11-21 20:41:17

On 11/20/2012 7:36 PM, Edward Diener wrote:
> On 11/20/2012 7:43 AM, Zhenghui Zhou wrote:
>> As I known, the undocument interface BOOST_PP_IS_EMPTY is not a general
>> implementation to condider emptiness. There is a undefined behaviours
>> when
>> token concatenation return a invalid preprocessing token.
>> Particularly, gcc
>> restriction reports error.
>
> See BOOST_IS_EMPTY in my variadic macros library in the sandbox.

Sorry that should be BOOST_VMD_IS_EMPTY.