Felipe Magno de Almeida <felipe.m.almeida@gmail.com> writes:
Hi,
I'm adventuring through the named template parameter support in the parameter library, using the test ntp.cpp as a documentation. But, AFAICS, there's no support for named template template parameters, is that right?
Couldnt it be possible to add such feature? I think it is possible if we use a different binding and an template_template_keyword (or with another name) ?
The problem is that they can't be mixed with other template parameter kinds, so it's really hard (i.e. impossible) to get order independence unless you have a bunch of adjacent named TTPs. I suggest you first consider asking users to pass MPL lambda expressions instead: with_ntp< container_is<std::vector<mpl::_> >, ... > That will deal with the problem with default arguments to class templates along the way (std::vector takes 2). -- Dave Abrahams Boost Consulting www.boost-consulting.com