Re: [Boost-users] [mpl] erase_key confusion

29 Mar 2007


      Hi Scott,

First of all, thanks for reporting this!
...
I expect the following code to compile cleanly.  It does not.
#include 
#include 
#include 
namespace mpl = boost::mpl;
using mpl::_1;
using mpl::_2;
struct A {};
struct B {};
typedef mpl::set set1;
typedef mpl::set set2;
BOOST_MPL_ASSERT((
   mpl::equal<
     mpl::erase_key::type,
     mpl::erase_key::type
...
));
I'm simply trying to assert that the sets {A,B} and {B,A} have the
same elements after A has been removed from both.  What am I doing
wrong?
As David has already pointed out, your code is perfectly fine; it's a
bug in the library. I'll look into fixing this within the next couple
of days.

Thanks for the report,
-- 
Aleksey Gurtovoy
MetaCommunications Engineering