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std::tuple_size
- Interface
- Return type
- Value
- Examples
- Header

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std::tuple_size¶

Interface¶

namespace std {
  template<typename T, std::size_t N, typename Traits>
  struct tuple_size<sprout::basic_string<T, N, Traits> >;
}

// syntax
std::tuple_size<basic_string<T, N, Traits> >::value

Return type¶

integral constant expression.

Value¶

N.

Examples¶

#include <sprout/string.hpp>
using namespace sprout;

using type = string<8>;
SPROUT_STATIC_CONSTEXPR auto n = std::tuple_size<type>::value;
static_assert(n == 8, "tuple size of string is 8.");