noexcept operator (depuis C++11) — cppreference.com

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L'opérateur noexcept effectue une vérification de compilation qui renvoie vrai si l'expression est déclaré à 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.

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Syntaxe


`noexcept(` expression `)`

Retourne un objet de type .. bool

Original:

Returns an object of type bool.

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Explication

L'opérateur noexcept ne expression évaluer. Le résultat est false si le expression contient au moins une des constructions suivantes potentiellement évalués:

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:

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throw expression
Original:
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dynamic_cast expression lorsque la conversion a besoin d'une vérification de l'exécution
Original:
dynamic_cast expression when the conversion needs a run time check
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typeid expression lorsque le type d'argument est de type classe polymorphe
Original:
typeid expression when argument type is polymorphic class type
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Dans tous les autres cas, le résultat est true .

Original:

In all other cases the result is true.

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Mots-clés

noexcept

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 spécificateur	nécessite une fonction à 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. [edit]

spécification d'exception	spécifie les exceptions sont jetés par un (obsolète) fonction Original: specifies what exceptions are thrown by a function (obsolète) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. [edit]