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picanumber/recursive_alternative.cpp

Last active September 9, 2021 19:53
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recursive_alternative.cpp
template <class T, class Tuple, std::size_t I = 0>
consteval std::size_t TypeIndex() {
if constexpr (I >= std::tuple_size<Tuple>::value) {
return 0;
} else if constexpr (std::is_same_v<T, std::tuple_element_t<I, Tuple>>) {
return I + 1;
} else {
return TypeIndex<T, Tuple, I + 1>();
}
}
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