std::ranges::elements_view<V,N>::elements_view
From cppreference.com
elements_view() requires std::default_initializable<V> = default;
|
(1) | (since C++20) |
constexpr explicit elements_view( V base );
|
(2) | (since C++20) |
Constructs an elements_view.
1) Default constructor. Value-initializes the underlying view
base_. After construction, base() returns a copy of V().2) Initializes the underlying view
base_ with std::move(base).Parameters
| base | - | the underlying view |
Example
Run this code
#include <array>
#include <iostream>
#include <ranges>
#include <tuple>
void println(auto const& v)
{
for (auto const& e : v)
std::cout << e << ' ';
std::cout << '\n';
}
int main()
{
using namespace std::literals;
const std::array<std::tuple<int, char, std::string>, 2> vt
{
std::tuple{1, 'A', "α"s},
std::tuple{2, 'B', "β"s},
};
[[maybe_unused]]
auto empty = std::views::elements<0>;
println(std::views::elements<0>(vt));
println(std::views::elements<1>(vt));
println(std::views::elements<2>(vt));
}
Output:
1 2
A B
α β