std::execution::just_error(3)

💖 std::execution::just_error(3) 💖

okay so bestie, welcome to the C++ Standard Libary manual page for std::execution::just_error ✨ (that’s the spelling from the header, not me being chaotic 💅). This one is a tiny little sender-maker and it’s honestly giving “short but important” energy.

🌸 NAME 🌸

std::execution::just_error — std::execution::just_error

like, that’s the name and the description, periodt 💖

🦋 Synopsis 🦋

Defined in header <execution>
execution::sender auto just_error( auto && error );  (since C++26)

slay, it’s a C++26 era function ✨

🎀 Parameters 🎀

• error — the input error which will be injected and returned by the receiver.

🔥 Return value 🔥

Returns a sender with no completion schedulers, which sends the provided values. That’s the whole vibe: no schedulers, just sending the provided values 💫

💜 Notes 💜

Important little details, bestie, pay attention:

• If the provided error is an lvalue reference, a copy is made inside the returned sender and a non-const lvalue reference to the copy is sent to the receiver’s set_error.
• If the provided value is an rvalue reference, it is moved into the returned sender and an rvalue reference to it is sent to the receiver’s set_error.

okay bye bestie 🫶 source: http://cppreference.com · version/date: 2024.06.10 · page: std::execution::just_error(3) 🎀✨