std::expected::error(3)

💅 std::expected::error(3) 💅

okay bestie, welcome to the C++ Standard Libary manual page for std::expected::error(3). Yes, the header spells it "Libary" — I'm not fixing it, I'm respecting the source. Lowkey iconic. Highkey a mood. 🫶

🌸 NAME 🌸

std::expected::error — and the NAME section literally says std::expected::error again. Same energy, fr fr. Periodt. 💅

✨ Synopsis ✨

Here are the overloads, all constexpr and all noexcept:

constexpr const E& error() const& noexcept;   (1) (since C++23)
constexpr E& error() & noexcept;              (2) (since C++23)
constexpr const E&& error() const&& noexcept; (3) (since C++23)
constexpr E&& error() && noexcept;            (4) (since C++23)

It accesses the unexpected value contained in *this. That's the vibe.

⚠️ The behavior is undefined if this->has_value() is true. Not a cute little oopsie — this is undefined behavior, bestie. That warning is the main character. 😭

📥 Parameters 📥

(none) — no parameters, bestie. Zero. None. ✨

🎁 Return value 🎁

The return value is a reference to the unexpected value contained in *this. That's it, and it ate. 💖

🧪 Example 🧪

This section is incomplete. Reason: no example. 😭 Not me showing up to an example section with zero example — the audacity — but that's literally what the page says. 🫠

👀 See also 👀

• operator-> — accesses the expected value
• operator* — (public member function)
• value — returns the expected value (public member function)
• operator bool — checks whether the object contains an expected value
• has_value — (public member function)

🏷️ Category 🏷️

• Todo — no example

💖 That's the page, bestie. Source/version: http://cppreference.com · date: 2024.06.10 · page: std::expected::error(3). Slay, bye! 🎀