[boost] [mpl] Lambda problems (was: rebind<> bad; template template good)

From: David B. Held (dheld_at_[hidden])
Date: 2002-10-04 20:10:42

Ok, this is really frustrating.  I'm trying trivial examples to understand
how lambda expressions work, and I can't get it to compile on bcc or
gcc.  Here's what I'm doing:

#include <boost/mpl/lambda.hpp>
#include <boost/mpl/apply.hpp>
//--------------------------------------------------------------------------
-
namespace mpl = boost::mpl;
using mpl::_;

template <typename T>
struct ownership
{ };

int main(int argc, char* argv[])
{
    typedef mpl::lambda<ownership<_> >::type f_;
    mpl::apply<f_, int>::type t;
}

gcc reports that 'type' is not a member of apply<...>.  bcc reports:

[C++ Error] apply.hpp(55): E2404 Dependent type qualifier
'ownership<_>' has no member type named 'apply'

I've tried bind<> too, with no luck.  Help!

Dave