std_function.h(3cxx)

💖 std_function.h — the 3cxx manual page bestie 💖

okay so this is the 3cxx manual page for std_function.h. Buckle up, bestie — it's giving internal-header energy, but we're gonna read every line anyway. 💅

✨ NAME ✨

std_function.h

🌸 SYNOPSIS 🌸

🧚 Classes

• struct std::__is_location_invariant< _Tp > — a struct template over _Tp, just hanging out in the header.
• class std::_Function_base — the base class of all polymorphic function object wrappers. It's the mom friend of the wrapper world. 🫶
• class std::bad_function_call — the exception class thrown when a class template function's operator() gets called with an empty target. Empty target = this exception says hi. 😭
• class std::function< _Res(_ArgTypes...)> — the polymorphic function wrapper itself. Main character energy, honestly. 👑

🌈 Namespaces

• namespace std — the toplevel namespace for ISO C++ entities. That's where std things live, iykyk.
• namespace std::__detail — implementation details that are not part of the namespace std interface. Basically the backstage area. Do not treat it like public API. 🙈

🦋 Typedefs

• template<typename _Fn , typename _Op > using std::__function_guide_t = typename __function_guide_helper< _Op >::type — yep, that's the exact alias, character for character. No notes, just vibes. ✨

🎀 Enumerations

• enum _Manager_operation { __get_type_info, __get_functor_ptr, __clone_functor, __destroy_functor } — all four enumerators are right there: __get_type_info, __get_functor_ptr, __clone_functor, and __destroy_functor. Slay. 💅

🔥 Functions

• template<typename _Fn , typename _Signature = __function_guide_t<_Fn, decltype(&_Fn::operator())>> std::function (_Fn) -> function< _Signature > — this is the exact signature, double space and all. Not me preserving the formatting, but also yes me. 😌
• template<typename _Res , typename... _ArgTypes> std::function (_Res(*)(_ArgTypes...)) -> function< _Res(_ArgTypes...)> — another exact function template signature; keep it verbatim, bestie.
• template<typename _Res , typename... _Args> bool std::operator== (const function< _Res(_Args...)> &__f, nullptr_t) noexcept — tests whether a polymorphic function object wrapper is empty. Returns bool, and it's noexcept. ✅
• template<typename _Res , typename... _Args> void std::swap (function< _Res(_Args...)> &__x, function< _Res(_Args...)> &__y) noexcept — swaps the targets of two polymorphic function object wrappers. Also noexcept, because we love a calm swap. 🔁

🔍 Detailed Description 🔍

This is an internal header file, included by other library headers. Do not attempt to use it directly. Instead, include <functional>. That's the whole warning — internal header, do not touch directly, use <functional> like a civilized icon. 💖

💌 Author 💌

Generated automatically by Doxygen for libstdc++ from the source code. So yes, Doxygen did that. 🫶

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