On Thu, Feb 21, 2008 at 12:52 PM, John Maddock <
john@johnmaddock.co.uk> wrote:
Ovanes Markarian wrote:
...
As I understand it, this traits class is intended to identify nested types
only - certainly that's the only use case I've used it for.
HTH, John.
Ohhh stupid me!!! I have overseen in the docs example the ASSERT_!!!NOT!!! and thought this assertion is true.
BOOST_MPL_HAS_XXX_TRAIT_DEF(has_xxx)
struct test1 {};
struct test2 { void xxx(); };
struct test3 { int xxx; };
struct test4 { static int xxx(); };
struct test5 { template< typename T > struct xxx {}; };
struct test6 { typedef int xxx; };
struct test7 { struct xxx; };
struct test8 { typedef void (*xxx)(); };
struct test9 { typedef void (xxx)(); };
BOOST_MPL_ASSERT_NOT(( has_xxx<test1> ));
BOOST_MPL_ASSERT_NOT(( has_xxx<test2> ));
BOOST_MPL_ASSERT_NOT(( has_xxx<test3> ));
BOOST_MPL_ASSERT_NOT(( has_xxx<test4> ));
BOOST_MPL_ASSERT_NOT(( has_xxx<test5> ));
...
Many thanks for your reply!
Ovanes