I need to construct an std::tuple object so that std::tuple_size<T>::value = 0.
Is there a way to do this?
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Darius Duesentrieb
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I don't see the problem here... – Matthieu Brucher Apr 09 '19 at 10:06
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1what did you try and how did it fail? – 463035818_is_not_an_ai Apr 09 '19 at 10:10
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i tried std::tuple() and had no clue what to try else. I didn't know that empty template brackets are a thing. How is this even implemented? – Darius Duesentrieb Apr 09 '19 at 10:11
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2@DariusDuesentrieb, Just like the forward declaration in [a reference](https://en.cppreference.com/w/cpp/utility/tuple). By the way, `std::tuple()` works as of C++17. – chris Apr 09 '19 at 10:31
1 Answers
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std::tuple<> empty;
using empty_t = std::tuple<>;
auto empty2 = std::make_tuple();
static_assert(std::tuple_size<std::tuple<>>::value == 0);
cmdLP
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