#
The class error_condition describes an object used to hold values identifying error conditions.
[Note 1: 
error_condition values are portable abstractions, while error_code values ([syserr.errcode]) are implementation specific.
— end note]
🔗
namespace std { class error_condition { public: / [syserr.errcondition.constructors], constructors error_condition() noexcept; error_condition(int val, const error_category& cat) noexcept; template<class ErrorConditionEnum> error_condition(ErrorConditionEnum e) noexcept; / [syserr.errcondition.modifiers], modifiers void assign(int val, const error_category& cat) noexcept; template<class ErrorConditionEnum> error_condition& operator=(ErrorConditionEnum e) noexcept; void clear() noexcept; / [syserr.errcondition.observers], observers int value() const noexcept; const error_category& category() const noexcept; string message() const; explicit operator bool() const noexcept; private: int val_; / exposition only const error_category* cat_; / exposition only }; }

19.5.5.2 Constructors [syserr.errcondition.constructors]

🔗
error_condition() noexcept;
1
#
Effects: Initializes val_ with 0 and cat_ with &generic_category().
🔗
error_condition(int val, const error_category& cat) noexcept;
2
#
Effects: Initializes val_ with val and cat_ with &cat.
🔗
template<class ErrorConditionEnum> error_condition(ErrorConditionEnum e) noexcept;
3
#
Effects: Equivalent to: error_condition ec = make_error_condition(e); assign(ec.value(), ec.category();
🔗
void assign(int val, const error_category& cat) noexcept;
1
#
Postconditions: val_ == val and cat_ == &cat.
🔗
template<class ErrorConditionEnum> error_condition& operator=(ErrorConditionEnum e) noexcept;
2
#
Effects: Equivalent to: error_condition ec = make_error_condition(e); assign(ec.value(), ec.category();
4
#
Returns: *this.
🔗
void clear() noexcept;
5
#
Postconditions: value() == 0 and category() == generic_category().
🔗
int value() const noexcept;
1
#
Returns: val_.
🔗
const error_category& category() const noexcept;
2
#
Returns: *cat_.
🔗
string message() const;
3
#
Returns: category().message(value().
🔗
explicit operator bool() const noexcept;
4
#
Returns: value() != 0.
🔗
error_condition make_error_condition(errc e) noexcept;
1
#
Returns: error_condition(static_cast<int>(e), generic_category().

Follow Lee on X/Twitter - Father, Husband, Serial builder creating AI, crypto, games & web tools. We are friends :) AI Will Come To Life!

Check out: eBank.nz (Art Generator) | Netwrck.com (AI Tools) | Text-Generator.io (AI API) | BitBank.nz (Crypto AI) | ReadingTime (Kids Reading) | RewordGame | BigMultiplayerChess | WebFiddle | How.nz | Helix AI Assistant