when.cpp 481 B

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  1. // Copyright Louis Dionne 2013-2017
  2. // Distributed under the Boost Software License, Version 1.0.
  3. // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
  4. #include <boost/hana/core/when.hpp>
  5. #include <type_traits>
  6. namespace hana = boost::hana;
  7. template <typename T, typename = hana::when<true>>
  8. struct base_template;
  9. template <typename T>
  10. struct base_template<T, hana::when<std::is_integral<T>::value>> {
  11. // something useful...
  12. };
  13. int main() { }