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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/detail/wrong.hpp>
- namespace hana = boost::hana;
- template <typename T, typename U>
- struct base_template {
- // Can't write this because the assertion would always fire up:
- // static_assert(false, "...");
- // So instead we write this:
- static_assert(hana::detail::wrong<base_template<T, U>>::value,
- "base_template does not have a valid default definition");
- };
- template <>
- struct base_template<int, int> {
- // something useful
- };
- int main() { }
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