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std::ranges::stride_view::begin(3) | C++ Standard Libary | std::ranges::stride_view::begin(3) |
NAME¶
std::ranges::stride_view::begin - std::ranges::stride_view::begin
Synopsis¶
constexpr auto begin() requires (!__simple_view<V>);
(1) (since C++23)
constexpr auto begin() const requires ranges::range<const V>;
(2) (since C++23)
Returns an iterator to the first element of the stride_view.
1) Equivalent to return iterator<false>(this, ranges::begin(base_));.
2) Equivalent to return iterator<true>(this,
ranges::begin(base_));.
Overload (1) does not participate in overload resolution if V is a
simple view (that
is, if V and const V are views with the same iterator and sentinel
types).
Parameters¶
(none)
Return value¶
Iterator to the first element of the view.
Example¶
A link to test: Compiler Explorer.
// Run this code
#include <print>
#include <ranges>
int main()
{
constexpr auto v = {'A', 'B', 'C'};
const auto x = v | std::views::stride(2);
const auto y = v | std::views::reverse | std::views::stride(2);
const auto z = v | std::views::stride(2) | std::views::reverse;
std::println("{} {} {}", *x.begin(), *y.begin(), *z.begin());
}
Output:¶
A C C
See also¶
end returns an iterator or a sentinel to the end
(C++23) (public member function)
2024.06.10 | http://cppreference.com |