std::error_condition(3)

📦
version 16.2.1+r23+gd564253eb6c8 · 10 versions
, in arch rolling, fedora 44

🦋 NAME 🦋

std::error_condition — bestie, this is the manual page for it (you know, std::error_condition(3) from the Library Functions Manual 💅). It's the lil class that says "hey, something went wrong at my API boundary" and lets your program check for it and deal with it. Periodt.

✨ SYNOPSIS ✨

#include <system_error>

🌸 Public Member Functions 🌸

  • error_condition () noexcept — starts you off with a zero (no error) value and the generic category. Clean slate energy 💖
  • template<typename _ErrorConditionEnum, typename = _Check<_ErrorConditionEnum>> error_condition (_ErrorConditionEnum __e) noexcept — starts you off with a user-defined type, by calling make_error_condition.
  • error_condition (const error_condition &)=default — the copy constructor, defaulted, slay.
  • error_condition (int __v, const error_category &__cat) noexcept — starts you off with the value and category you specify.
  • void assign (int __v, const error_category &__cat) noexcept — sets the value and the category.
  • const error_category & category () const noexcept — the error category this error belongs to.
  • void clear () noexcept — resets the value and category back to the default-constructed state. Fresh start bestie 🫶
  • string message () const — the category's description of the value.
  • operator bool () const noexcept — tests whether value() is non-zero.
  • error_condition & operator= (const error_condition &)=default — assignment, defaulted, iconic.
  • int value () const noexcept — the error value.
Heads up bestie: these are not member symbols. Just vibing nearby. 🙈
  • error_condition make_error_condition (errc __e) noexcept
  • strong_ordering operator<=> (const error_condition &__lhs, const error_condition &__rhs) noexcept
  • bool operator== (const error_code &__lhs, const error_code &__rhs) noexcept
  • bool operator== (const error_code &__lhs, const error_condition &__rhs) noexcept
  • bool operator== (const error_condition &__lhs, const error_condition &__rhs) noexcept

🌈 Detailed Description 🌈

Class error_condition

Okay so here's the whole vibe: this class represents error conditions that may be visible at an API boundary. The way that different error_code values can show up inside a library or a module and yet all map to the same error_condition? Obsessed. 🔥

An error_condition represents something that the program can test for, and then subsequently take appropriate action. That's the whole point, and it ate. 💅

Since

C++11 ✨

🎀 Constructor & Destructor Documentation 🎀

std::error_condition::error_condition () [inline], [noexcept]

Initialize with a zero (no error) value and the generic category.

References std::generic_category().

Referenced by make_error_condition(), operator<=>(), operator==(), and operator==().

std::error_condition::error_condition (int __v, const error_category & __cat) [inline], [noexcept]

Initialize with the specified value and category.

template<typename _ErrorConditionEnum, typename = _Check<_ErrorConditionEnum>> std::error_condition::error_condition (_ErrorConditionEnum __e) [inline], [noexcept]

Initialize with a user-defined type, by calling make_error_condition.

References make_error_condition().

💖 Member Function Documentation 💖

void std::error_condition::assign (int __v, const error_category & __cat) [inline], [noexcept]

Set the value and category.

Referenced by clear().

const error_category & std::error_condition::category () const [inline], [noexcept]

The error category that this error belongs to.

Referenced by message().

void std::error_condition::clear () [inline], [noexcept]

Reset the value and category to the default-constructed state.

References assign(), and std::generic_category().

string std::error_condition::message () const [inline]

The category's description of the value.

References category(), std::error_category::message(), and value().

std::error_condition::operator bool () const [inline], [explicit], [noexcept]

Test whether value() is non-zero.

int std::error_condition::value () const [inline], [noexcept]

The error value.

Referenced by message().

🌟 Author 🌟

Generated automatically by Doxygen for libstdc++ from the source code.

and that's the whole page bestie, no cap, every flag and every reference accounted for 🫶 This gorgeous lil manual page came to you courtesy of libstdc++ and its version of std::error_condition(3) — mwah, take care of her 💅🎀✨

📦 where this page comes from
  • arch rolling: gcc 16.2.1+r23+gd564253eb6c8-1 · GPL-3.0-or-later WITH GCC-exception-3.1 AND GFDL-1.3-or-later
  • fedora 44: libstdc++-docs 16.0.1-0.10.fc44 · GPL-3.0-or-later AND LGPL-3.0-or-later AND (GPL-3.0-or-later WITH GCC-exception-3.1) AND (GPL-3.0-or-later WITH Texinfo-exception) AND (LGPL-2.1-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GNU-compiler-exception) AND BSL-1.0 AND GFDL-1.3-or-later AND Linux-man-pages-copyleft-2-para AND SunPro AND BSD-1-Clause AND BSD-2-Clause AND BSD-2-Clause-Views AND BSD-3-Clause AND BSD-4-Clause AND BSD-Source-Code AND Zlib AND MIT AND Apache-2.0 AND (Apache-2.0 WITH LLVM-Exception) AND ZPL-2.1 AND ISC AND LicenseRef-Fedora-Public-Domain AND HP-1986 AND curl AND Martin-Birgmeier AND HPND-Markus-Kuhn AND dtoa AND SMLNJ AND AMD-newlib AND OAR AND HPND-merchantability-variant AND HPND-Intel
  • fedora 44: libstdc++-docs 16.2.1-2.fc44
  • fedora 44: libstdc++-docs 16.2.1-3.fc44 · GPL-3.0-or-later AND LGPL-3.0-or-later AND (GPL-3.0-or-later WITH GCC-exception-3.1) AND (GPL-3.0-or-later WITH Texinfo-exception) AND (LGPL-2.1-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GNU-compiler-exception) AND BSL-1.0 AND GFDL-1.3-or-later AND Linux-man-pages-copyleft-2-para AND SunPro AND BSD-1-Clause AND BSD-2-Clause AND BSD-2-Clause-Views AND BSD-3-Clause AND BSD-4-Clause AND BSD-Source-Code AND Zlib AND MIT AND Apache-2.0 AND (Apache-2.0 WITH LLVM-Exception) AND ZPL-2.1 AND ISC AND LicenseRef-Fedora-Public-Domain AND HP-1986 AND curl AND Martin-Birgmeier AND HPND-Markus-Kuhn AND dtoa AND SMLNJ AND AMD-newlib AND OAR AND HPND-merchantability-variant AND HPND-Intel
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