tuple_get

Interface

template<std::size_t I, typename T, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR T&
tuple_get(sprout::basic_string<T, N, Traits>& t) SPROUT_NOEXCEPT;

template<std::size_t I, typename T, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR T const&
tuple_get(sprout::basic_string<T, N, Traits> const& t) SPROUT_NOEXCEPT;

template<std::size_t I, typename T, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR T&&
tuple_get(sprout::basic_string<T, N, Traits>&& t) SPROUT_NOEXCEPT;

Requires

I < N. The program is ill-formed if I is out of bounds.

Returns

A reference to the Ith element of a, where indexing is zero-based.

or

A const reference to the Ith element of a, where indexing is zero-based.

or

Equivalent to return move(tuple_get<I>(t));

Notes

sprout::get<I>(t) (same as sprout::tuples::get) is a valid call, because tuple_get<I>(t) ADL callable is defined.

Examples

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

SPROUT_STATIC_CONSTEXPR auto input = string<8>("homuhomu");
static_assert(sprout::get<4>(input) == 'h', "an element at position 4 is h.");

Complexity

Recursive function invocations in O(1) (constant) depth.

Header

sprout/string/tuple.hpp

Convenience header: sprout/string.hpp