Re: [boost] [mpl] metafunctions for stl templates

12 Nov 2006


      Sascha Krissler wrote:
...
On Sat, Nov 11, 2006 at 06:16:26PM -0800, Eric Niebler wrote:
...
Sascha Krissler wrote:
...
What i would like is:
template <typename T, typename Container>
struct Foo {
  typedef typename mpl::apply<Container, T>::type foo;
};
and instantiate it with:
Foo<int, mpl::stl_foo::vector<mpl::placeholder::_1> >
For that i need
namespace boost::mpl::stl_foo {
  template <typename T, typename Alloc>
  struct vector {
      typedef std::vector<T, Alloc> type
  };
}
so i can curry containers as i wish.
just an idea
Try this instead:
using mpl::_;
Foo< int, std::vector<_> >
:-)
std::vector is not a metafunction, it has no ::type
It doesn't matter. Try it and see.

--
Eric Niebler
Boost Consulting
www.boost-consulting.com