On 08/13/11 12:52, Gordon Woodhull wrote:
On Aug 13, 2011, at 1:21 PM, "Hartmut Kaiser"
<hartmut.kaiser@gmail.com> wrote:
so why not leave the existing MPL alone and start over?
Is there any reason a variadic MPL would have a different interface? I.e. could we have a clean MPL'11 with the same interface, and leave the old workarounds to rot?
There's a "mostly" variadic mpl here: http://svn.boost.org/svn/boost/sandbox/variadic_templates/boost/mpl/ which works with a later g++ compiler (> 4.5 I think) which does "leave the old > workarounds" by just using another compiler flag, -I<variadic_templates> (where <variadic_templates> is the above directory), in front of other -I flags (including the one to the non-variadic boost) to get the variadic version of the mpl templates. I say "mostly" because the compiler does use the non-variadic mpl files if they're not found in the variadic boost directory. The <variadic_template>/boost/mpl directory does have a few new templates, such as those in: fold_assoc*.hpp which are meant to mimic those in haskell, and: while.hpp which does what the filename suggests. HTH. -regards, Larry