Hi Daryle Daryle Walker escribió:
Here's what I'm trying (to redo integer_test.cpp) [...] BOOST_STATIC_ASSERT ( (boost::is_same<distinct_integral_bit_counts, boost::mpl::list_c<int, 8, 16, 32, 64> >) ); }
I think there are two problems with this: 1. You're passing a *type* (boost::is_same<...>) to BOOST_STATIC_ASSERT when you should be passing a numeric contanst. Append ::value to the type. 2. Even with the correction above the thing won't work because is_same<T,Q> checks for strict equality of the types T and Q; in your case distinct_integral_bit_counts is *not* the same type as boost::mpl::list_c<...>, but only has the same components. You can use boost::mpl::equal to test this: BOOST_STATIC_ASSERT ( (boost::mpl::equal<distinct_integral_bit_counts, boost::mpl::list_c<int, 8, 16, 32> >::value) ); } Other than that, your type_to_digit_count is perfectly lambda-cabable AFAICS. HTH, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo