std::generic_category
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definiert in Header <system_error> | ||
conststd::error_category& generic_category(); | (seit C++11) | |
Ruft einen Verweis auf den statischen Fehler Kategorie-Objekt für generische Fehler. Das Objekt ist erforderlich, um die virtuelle Funktion error_category::name() überschreiben, um einen Zeiger auf den String "generic" zurückzukehren. Es wird verwendet, um Fehlerbedingungen, die zu den POSIX errno-Codes entsprechen, zu identifizieren .
Original:
Obtains a reference to the static error category object for generic errors. The object is required to override the virtual function error_category::name() to return a pointer to the string "generic". It is used to identify error conditions that correspond to the POSIX errno codes.
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[Bearbeiten]Parameter
(None)
Original:
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[Bearbeiten]Rückgabewert
Ein Verweis auf den statischen Objekt unbestimmter Laufzeit-Typ, von std::error_category abgeleitet .
Original:
A reference to the static object of unspecified runtime type, derived from std::error_category.
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[Bearbeiten]Ausnahmen
[Bearbeiten]Beispiel
#include <iostream>#include <system_error>#include <cerrno>#include <string>int main(){std::error_condition econd = std::generic_category().default_error_condition(EDOM);std::cout<<"Category: "<< econd.category().name()<<'\n'<<"Value: "<< econd.value()<<'\n'<<"Message: "<< econd.message()<<'\n';}
Output:
Category: generic Value: 33 Message: Numerical argument out of domain
[Bearbeiten]Siehe auch
(C++11) | identifiziert das Betriebssystem Fehler Kategorie Original: identifies the operating system error category The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) |
(C++11) | Die std::error_condition Aufzählung listet alle gängigen <cerrno> Makro-KonstantenOriginal: the std::error_condition enumeration listing all standard <cerrno> macro constantsThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Klasse) |