On Fri, Nov 18, 2011 at 9:29 AM, Nat Linden <nat@lindenlab.com> wrote:

On Thu, Nov 10, 2011 at 12:52 AM, Jeffrey Lee Hellrung, Jr.
<jeffrey.hellrung@gmail.com> wrote:

[...]

> - Likewise, Lorenzo is proposing to add BOOST_IDENTITY_VALUE to boost/utility. See https://svn.boost.org/svn/boost/sandbox/local/libs/local/doc/html/BOOST_IDENTITY_VALUE.html

This is one point on which the documentation is not clear. For an
expression that evaluates to a runtime value, what's the benefit of
(e.g. from the cited page) BOOST_IDENTITY_VALUE((key_sizeof<int,
double>::value)) vs. the simpler and more obvious extra set of
parentheses: (key_sizeof<int, double>::value) ?

Uh, seems like a good point that I definitely overlooked! Lorenzo, do you have a use case where the extra set of parentheses posed a problem?

- Jeff