has_data.hpp

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#ifndef TATAMI_HAS_DATA_HPP
#define TATAMI_HAS_DATA_HPP
 
#include <type_traits>
 
namespace tatami {
 
template<typename T, class V, typename = int>
struct has_data {
    static const bool value = false;
};
 
template<typename T, class V>
struct has_data<T, V, decltype((void) std::declval<V>().data(), 0)> { 
    static const bool value = std::is_same<T*, decltype(std::declval<V>().data())>::value;
};
 
}
 
#endif