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- #pragma once
-
- #include <cpputils/mp/operations/value.h>
-
- namespace utl {
- namespace mp {
- namespace intern {
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- template<typename C>
- struct has_value
- : c_bool<!is_default<__impl::value_impl<tag_of<C>>>::value>
- { };
-
- }
- }
- }
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