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Oh, C++11...

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This commit is contained in:
John Eivind Helset 2022-06-18 17:21:03 +02:00
parent 0203853868
commit 88bdd35b2e
1 changed files with 9 additions and 4 deletions
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13
include/fmt/ranges.h
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@ -203,7 +203,7 @@ using make_index_sequence = make_integer_sequence<size_t, N>;
#endif #endif
template <typename T> template <typename T>
using tuple_index_sequence = make_index_sequence<std::tuple_size_v<T>>; using tuple_index_sequence = make_index_sequence<std::tuple_size<T>::value>;
template <typename T, bool = is_tuple_like_<T>::value> template <typename T, bool = is_tuple_like_<T>::value>
struct is_tuple_formattable_ { struct is_tuple_formattable_ {
@ -211,9 +211,14 @@ struct is_tuple_formattable_ {
}; };
template <typename T> struct is_tuple_formattable_<T, true> { template <typename T> struct is_tuple_formattable_<T, true> {
template <std::size_t... I> template <std::size_t... I>
static std::integral_constant< static std::true_type
bool, (fmt::is_formattable<std::tuple_element_t<I, T>>::value && ...)> check2(index_sequence<I...>,integer_sequence<bool,(I == I)...>);
check(index_sequence<I...>); static std::false_type
check2(...);
template <std::size_t... I>
static decltype(check2(index_sequence<I...>{},
integer_sequence<bool,(fmt::is_formattable<typename std::tuple_element<I, T>::type>::value)...>{}))
check(index_sequence<I...>);
public: public:
static constexpr const bool value = static constexpr const bool value =