std::promise::promise(3)

🌸 NAME 🌸

okay so welcome to std::promise::promise(3), bestie — this lives in the C++ Standard Libary manual, and the name is std::promise::promise : std::promise::promise. Yes, the icon is self-titled, we love that for her 👑✨

✨ Synopsis ✨

Here's the constructor lineup, and code is sacred so it stays exactly like this:

promise();                                           (1) (since
C++11)
template< class Alloc >                              (2) (since
C++11)
promise( std::allocator_arg_t, const Alloc& alloc );
promise( promise&& other ) noexcept;                 (3) (since
C++11)
promise( const promise& other ) = delete;            (4) (since
C++11)

Constructs a promise object. Main character energy from the jump 💅

1. (1) — Default constructor. Constructs the promise with an empty shared state. Clean slate vibes ✨
2. (2) — Constructs the promise with an empty shared state. The shared state is allocated using alloc. Alloc must meet the requirements of Allocator. Fancy allocator moment, no cap 🎀
3. (3) — Move constructor. Constructs the promise with the shared state of other using move semantics. After construction, other has no shared state. She took the state and left, periodt 🦋
4. (4) — promise is not copyable. Literally = delete, bestie 😭

💖 Parameters 💖

• alloc — allocator to use to allocate the shared state.
• other — another promise to acquire the state from.

🚨 Exceptions 🚨

• 1,2) — May throw implementation-defined exceptions. So, like, stay aware 🌈

🌈 Example 🌈

This section is incomplete Reason: no example

Not me wanting an example and getting this 😭🙈

🎀 Category 🎀

• Todo no example

okay bye bestie, go construct responsibly 💜 shoutout to http://cppreference.com for the source/version, dated 2024.06.10 🫶