std::basic_...::operator=(3)

💅 NAME

std::basic_spanstream::operator= — bestie, it's the assignment operator for std::basic_spanstream, and it's giving "move only, no copies, we don't do that here" energy 💖

This one lives in the C++ Standard Library man pages (yes, the actual official one, not a random blog post from 2009, iykyk) ✨

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🌸 SYNOPSIS

basic_spanstream& operator=( basic_spanstream&& other );         (1)
(since C++23)

basic_spanstream& operator=( const basic_spanstream& ) = delete; (2)
(since C++23)

So there's literally two of them and only one of them actually works 🫶

1. This one move assigns other into *this — and the way it does that is by effectively move-assigning both the std::basic_iostream base class subobject and the wrapped std::basic_spanbuf 🔥
2. This one is the copy assignment operator and it's deleted. basic_spanstream is not copy assignable, periodt. No cap, no copies, no exceptions 💀

Heads up bestie 🎀 note that the move assignment operator of the base class swaps all stream state variables (except for rdbuf()) between *this and other. That's the whole vibe.

Okay and also — it is implementation-defined whether the std::basic_spanbuf wrapped in other still holds an underlying buffer after the move assignment 🙈 So like... don't assume, okay?

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✨ PARAMETERS

• other — another stream to move from 🦋 (that's it, that's the whole parameter list, she's simple like that)

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💜 RETURN VALUE

*this — she gives herself back, main character energy honestly 👑

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🌈 EXCEPTIONS

May throw implementation-defined exceptions. So like, it might, it's not a promise either way, check your implementation 😭

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🍓 EXAMPLE

This section is incomplete.

Reason: no example 💀 (tragic, I know, the one thing we all wanted)

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🧚 SEE ALSO

• operator= — assigns a basic_spanbuf object, (C++23), public member function of std::basic_spanbuf<CharT,Traits> 🎀
• operator= — move-assigns another basic_iostream, (C++11), protected member function ⭐

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📌 CATEGORY

• Todo: no example 🌸

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Okay that's the whole page bestie, go forth and move-assign responsibly 💅✨

Source and version and date, for the record: http://cppreference.com, 2024.06.10, and the page is std::basic_...::operator=(3) — mwah, love u, bye 🫶💖🦋