Subject: Re: [boost] Alternative implementation for BOOST_PP_VARIADIC_SIZE
From: Edward Diener (eldiener_at_[hidden])
Date: 2011-11-13 16:47:04
On 11/13/2011 3:49 PM, Peter Dimov wrote:
> Edward Diener wrote:
>> There is a comment number 7 which is mine at the bottom of
>> https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/ .
> I don't see it.
I do not know why that is the case. Is the last comment number 6 that
you see ? I know I added a comment and it shows up as 7 when I bring up
the page. My comment is:
"#define AMACRO(x) ()
IS_EMPTY(AMACRO) is true, where of course it should be false.
This is the flaw in your presentation and it is well-known. See Paul
Mensonides post at
I give a better and less complicated version of IS_EMPTY in my variadic
data macro library in the Boost sandbox which is almost wholly based on
Paul Mensonides brilliant version ( I have to do some tweaks for VC8 )."
Boost list run by bdawes at acm.org, david.abrahams at rcn.com, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk