std::chrono...::hh_mm_ss)(3)

💖 NAME 💖

okay bestie, this is the C++ Standard Libary manual, section (3), page for std::chrono::operator<<(std::chrono::hh_mm_ss) 🫶

• std::chrono::operator<<(std::chrono::hh_mm_ss) — std::chrono::operator<<(std::chrono::hh_mm_ss).

✨ Synopsis ✨

Hiii so this one is defined in header <chrono> and it’s since C++20 ✨:

template< class CharT, class Traits, class Duration >
std::basic_ostream<CharT, Traits>&
operator<<( std::basic_ostream<CharT, Traits>& os,
            const std::chrono::hh_mm_ss<Duration>& t );

It outputs t into the stream os, fr fr 💅.

Equivalent to:

return os << std::format(os.getloc(), STATICALLY_WIDEN<CharT>("{:L%T}"), hms);

where STATICALLY_WIDEN<CharT>("{:L%T}") is "{:L%T}" if CharT is char, and L"{:L%T}" if CharT is wchar_t 👑

🎀 Parameters 🎀

• os — the output stream, bestie.
• t — the time of day to be output.

🫶 Return value 🫶

Returns os. That’s it, that’s the return value 🫶

💅 Example 💅

This section is incomplete. Reason: no example.

🔥 Defect reports 🔥

The following behavior-changing defect reports were applied retroactively to previously published C++ standards:

• P2372R3, applied to C++20 — behavior as published: the given locale was used by default. Correct behavior: L is needed to use the given locale.

🦋 See also 🦋

• format (C++20) — function template; stores formatted representation of the arguments in a new string.
• std::formatter<std::chrono::hh_mm_ss> (C++20) — class template specialization; formatting support for hh_mm_ss.

🍓 Category 🍓

• Todo no example

shoutout to http://cppreference.com and the date 2024.06.10 — that’s the source/version and date, bestie, mwah 💋