std::ranges..._view::begin(3)

std::ranges..._view::begin(3) — hiii bestie, welcome to the C++ Standard Libary manual page for std::ranges::stride_view::begin (we folded the manual name in here instead of copying the whole header line, you're welcome 💅).

🌸 NAME 🌸

std::ranges::stride_view::begin — std::ranges::stride_view::begin (yes, it says it twice, and honestly? iconic 💖).

✨ 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. periodt ✨

1. Equivalent to return iterator<false>(this, ranges::begin(base_));.
2. Equivalent to return iterator<true>(this, ranges::begin(base_));.

🚨 real talk: 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) — literally none, bestie 🫶

💜 Return value 💜

Iterator to the first element of the view. slay ✨

🌈 Example 🌈

A link to test: Compiler Explorer. (The page says it, not me 😭)

// 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) 💫

that's the whole vibe! source/version: http://cppreference.com; date: 2024.06.10; page: std::ranges..._view::begin(3) — bye bestie, go iterate something cute 💖🎀