Apache Arrow (C++)
A columnar in-memory analytics layer designed to accelerate big data.
type_traits.h
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17 
18 #ifndef ARROW_UTIL_TYPE_TRAITS_H
19 #define ARROW_UTIL_TYPE_TRAITS_H
20 
21 #include <type_traits>
22 
23 namespace arrow {
24 namespace internal {
25 
27 template <typename...>
28 struct IsOneOf : std::false_type {};
29 
30 template <typename T, typename U, typename... Args>
31 struct IsOneOf<T, U, Args...> {
33  static constexpr bool value = std::is_same<T, U>::value || IsOneOf<T, Args...>::value;
34 };
35 
37 template <typename T, typename... Args>
38 using EnableIfIsOneOf = typename std::enable_if<IsOneOf<T, Args...>::value, T>::type;
39 
41 template <typename T>
42 struct is_null_pointer : std::is_same<std::nullptr_t, typename std::remove_cv<T>::type> {
43 };
44 
45 } // namespace internal
46 } // namespace arrow
47 
48 #endif // ARROW_UTIL_TYPE_TRAITS_H
Top-level namespace for Apache Arrow C++ API.
Definition: adapter.h:32