noexcept operator (depuis C++11)
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L'oprateur
noexcept effectue une vrification de compilation qui renvoie vrai si l'expression est dclar ne pas jeter des exceptions .Original:
The
noexcept operator performs a compile-time check that returns true if an expression is declared to not throw any exceptions.The text has been machine-translated via Google Translate.
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Il peut tre utilis dans un modle de fonction
noexcept spcificateur
de dclarer que la fonction lever des exceptions pour certains types mais pas d'autres .Original:
noexcept specifier
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Original:
It can be used within a function template's
noexcept spcificateur
to declare that the function will throw exceptions for some types but not others.Original:
noexcept specifier
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Syntaxe
noexcept( expression )
|
|||||||||
Retourne un objet de type ..
bool Original:
Returns an object of type
bool. The text has been machine-translated via Google Translate.
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Explication
L'oprateur
noexcept ne expression valuer. Le rsultat est false si le expression contient au moins une des constructions suivantes potentiellement valus:Original:
The
noexcept operator does not evaluate expression. The result is false if the expression contains at least one of the following potentially evaluated constructs:The text has been machine-translated via Google Translate.
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- appeler tout type de fonction qui n'a pas de spcification d'exception non lancer, sauf si c'est unexpression constante.Original:constant expressionThe text has been machine-translated via [http://translate.google.com Google Translate].
You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.Original:call to any type of function that does not have non-throwing exception specification, unless it is aexpression constante.Original:constant expressionThe text has been machine-translated via [http://translate.google.com Google Translate].
You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. throwexpressionOriginal:throwexpressionThe text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.dynamic_castexpression lorsque la conversion a besoin d'une vrification de l'excutionOriginal:dynamic_castexpression when the conversion needs a run time checkThe text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.typeidexpression lorsque le type d'argument est de type classe polymorpheOriginal:typeidexpression when argument type is polymorphic class typeThe text has been machine-translated via Google Translate.
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Dans tous les autres cas, le rsultat est
true .Original:
In all other cases the result is
true.The text has been machine-translated via Google Translate.
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Mots-cls
Exemple
template <class T>
void self_assign(T& t) noexcept(noexcept(T::operator=))
{ // self_assign is noexcept if and only if T::operator= is noexcept
t = t;
}
Voir aussi
| noexcept spcificateur | ncessite une fonction ne pas jeter tout (C++11) exceptions
Original: requires a function to not throw any exceptions (C++11) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| spcification d'exception | spcifie les exceptions sont jets par un (obsolte) fonction
Original: specifies what exceptions are thrown by a function (obsolte) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |