[boost] call_traits

From: Jason Hise (chaos_at_[hidden])
Date: 2005-09-24 21:10:50

Why doesn't the following compile?  I get the error "foo: function does 
not take 1 arguments" on VC8.

#include <boost/call_traits.hpp>

template < typename P1 >
void foo ( typename ::boost::call_traits < P1 >::param_type p1 )
{
}

int main (  )
{
    foo ( 42 ); // error here
    return 0;
}

(Background info: I would like to use this technique to generate 
optimized forwarding functions that do not know anything about the 
function being forwarded to.  Overloads taking any number of params 
would be generated with the boost preprocessor library.)

-Jason