std::chrono::local_info(3)

okay bestie, welcome to the std::chrono::local_info(3) page, straight from the C++ Standard Libary 💅 this one is a whole little low-level vibe, so let's get into it ✨

💖 NAME 💖

std::chrono::local_info — std::chrono::local_info. that's literally the name section doing its mirror thing 🪞 iconic, we move.

✨ Synopsis ✨

Defined in header <chrono>
struct local_info;          (since C++20)

okay so the class local_info describes the result of converting a std::chrono::local_time to a std::chrono::sys_time. no cap, that's the whole main-character job 🌟

• if the result of the conversion is unique, then result == local_info::unique, first is filled out with the correct std::chrono::sys_info, and second is zero-initialized. clean, simple, slay ✨
• if the local_time is nonexistent, then result == local_info::nonexistent, first is filled out with the std::chrono::sys_info that ends just prior to the local_time, and second is filled out with the std::chrono::sys_info that begins just after the local_time. that time kinda ghosted the timeline 👻
• if the local_time is ambiguous, then result == local_info::ambiguous, first is filled out with the std::chrono::sys_info that ends just after the local_time, and second is filled with the std::chrono::sys_info that starts just before the local_time. two timings, one moment, the drama of it all 😭

lowkey important: this is a low-level data structure; typical conversions from local_time to sys_time will use it implicitly rather than explicitly. so it's giving backstage crew, not main-stage energy 🎀

🎀 Member constants 🎀

name → value, and yes they're all [static] (public static member constant), periodt:

• constexpr int unique — value 0; [static] (public static member constant).
• constexpr int nonexistent — value 1; [static] (public static member constant).
• constexpr int ambiguous — value 2; [static] (public static member constant).

🦋 Member objects 🦋

• result — type int.
• first, second — type std::chrono::sys_info.

🌸 Nonmember functions 🌸

• operator<< — outputs a local_info into a stream. (C++20) · (function template).

💜 Helper classes 💜

• std::formatter<std::chrono::local_info> — formatting support for local_info. (C++20) · (class template specialization).

source: http://cppreference.com · version/date: 2024.06.10 · page: std::chrono::local_info(3) — mwah, bestie, go forth and convert responsibly 💋