std::expect...::has_value(3)

📦 version 2024.07.05, in nixpkgs unstable, opensuse-leap 16.0

✨ NAME ✨

std::expected::operatorbool,std::expected::has_value — std::expected::operatorbool,std::expected::has_value

Okay bestie, welcome to the std::expect...::has_value(3) page from the C++ Standard Libary manual 💖 this one is all about checking whether your std::expected is holding an expected value — very main character energy, no cap.

🌸 Synopsis 🌸

constexpr explicit operator bool() const noexcept;  (since C++23)
constexpr bool has_value() const noexcept;          (since C++23)

Checks whether *this contains an expected value. That's the whole vibe check ✨

🎀 Parameters 🎀

(none) — no arguments, no extras, literally nothing to pass. Nada 🫶

💅 Return value 💅

  • true if *this contains an expected value
  • false if *this contains an unexpected value

🦋 Notes 🦋

A std::expected object is never empty. If has_value() returns true, operator* can be used to access the contained value; otherwise, error() can be used.

🔥 Example 🔥

This section is incomplete Reason: no example

Category: * Todo no example

👑 See also 👑

  • operator-> accesses the expected value
  • operator* (public member function)
  • error returns the unexpected value (public member function)

That's the whole page, bestie 🫶 signing off from http://cppreference.com on 2024.06.10 — this was std::expect...::has_value(3), mwah 💅✨

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