Boost logo

Boost :

Subject: Re: [boost] [preprocessor] BOOST_PP_OVERLOAD not defined if variadic macros not supported.
From: Edward Diener (eldiener_at_[hidden])
Date: 2013-04-13 23:41:31

On 4/9/2013 2:59 AM, Mostafa wrote:
> On Sun, 07 Apr 2013 15:35:52 -0700, Edward Diener
> <eldiener_at_[hidden]> wrote:
>> On 4/7/2013 5:12 AM, Mostafa wrote:
>>> On Sat, 06 Apr 2013 13:54:35 -0700, Nathan Ridge
>>> <zeratul976_at_[hidden]> wrote:
>>> [snip]
>>>> However, I agree that this should be made more explicit, because just
>>>> looking at the page for BOOST_PP_OVERLOAD, one may not know what the
>>>> '(v)' signifies. Perhaps the '(v)' could be a link to the paragraph
>>>> I quoted?
>>> Thank you for the explanation. That was exactly my situation, I too was
>>> wondering what the '(v)' meant and indeed tried clicking on it, then
>>> looked for a footnote, but in the just attributed it to some
>>> documentation typo.
>>>> Perhaps the '(v)' could be a link to the paragraph
>>>> I quoted?
>>> That would certainly be very helpful. How does one bring this to the
>>> attention of the maintainer(s)?
>> I am one of the maintainers, as I did work adding variadic macro
>> support to Boost PP with Paul Mensonides help. I do think that linking
>> to some other page or anchor each time you click the "(v)" is redundant.
> Isn't that the whole point of citations? Instead of repeating in place,
> one links to a bibliography, or some other section of text?
>> There are many places in the Boost PP doc that use the "(v)" notation
>> and I would have to link or anchor each one of them. I also found out
>> an anchor on another page does not work well with the way the Boost PP
>> docs are setup.
> If I were to peruse the BOOST_PP_OVERLOAD reference, how would I know
> what '(v)' meant? If it's not clickable, then I would look for the
> citation's body at the bottom of the page, or in the bibliography,
> neither of which exist. Hence I'm left scrounging the whole document
> until by luck I come across its definition.
> My experience as a casual user of the library,

I added, on the Boost trunk, a link each time (v) appears in Boost PP to
this area, as a named anchor, of the variadic macro topic:

"Notation For Variadic Macros
In the documentation, headers which have variadic macros, and variadic
macros themselves, have a notation of '(v)' appended to them. For the
variadic macros themselves this signifies that BOOST_PP_VARIADICS must
be 1 for those variadic macros to be usable. For variadic macros which
have a non-variadic equivalent, the non-variadic equivalent will be used
if BOOST_PP_VARIADICS is set to 0 and the non-variadic version of the
macro does not have a '(v)' appended to its name in the documentation."

If you get the latest from Boost trunk it should satisfy what you want
regarding the (v) notation. If Paul Mensonides is OK with this, the
documentation change can be added to the next Boost release.

Boost list run by bdawes at, gregod at, cpdaniel at, john at