noexcept operator (dal C++11)

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Espressioni regolari (C++11)

Operazioni atomicche (C++11)

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Linguaggio C + +

Temi generali Original: General topics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Preprocessore Commenti Parole chiave	Tabella ASCII Sequenze di escape La storia del C + +
Controllo del flusso Original: Flow control The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Dichiarazioni esecuzione condizionale Original: Conditional execution statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
if statement	switch statement
Iterazione dichiarazioni Original: Iteration statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
for loop range-for loop (C++11)	while loop do-while loop
Vai dichiarazioni Original: Jump statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
continue statement break statement	goto statement return statement
Funzioni Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
dichiarazione di funzione
lambda funzione dichiarazione
funzione di modello
specificatore inline
eccezioni specifiche (deprecato)
noexcept specificatore (C++11)
Eccezioni Original: Exceptions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
tiro espressione	blocco try-catch
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namespace dichiarazione	alias dello spazio dei nomi
Tipi Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
tipi fondamentali composti tipi enumerazione tipi	sindacali tipi tipi di funzione
decltype specifier (C++11)
Specifiers Original: Specifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
cv specificatori
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constexpr specificatore (C++11)
specificatore auto (C++11)
alignas specificatore (C++11)
Inizializzazione Original: Initialization The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
predefinito di inizializzazione valore di inizializzazione inizializzazione a zero copiare inizializzazione inizializzazione diretta	inizializzazioni di aggregazione elenco di inizializzazione (C++11) inizializzazione delle costanti riferimento inizializzazione

Letterali Original: Literals The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
letterali interi caratteri letterali virgola mobile letterali stringhe letterali	letterali booleani nullptr (C++11) definito dall'utente (C++11)
Espressioni Original: Expressions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
valore categorie ordine di valutazione	operatori precedenza degli operatori
rappresentazioni alternative
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typedef declaration
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attributi (C++11)
Lancia Original: Casts The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
conversioni implicite
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
Fusione C-stile e funzionale
Occupazione della memoria Original: Memory allocation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
new expression	delete expression
Classi Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
classe di dichiarazione this pointer specificatori di accesso	amico specificatore liste di inizializzazione
Specifiche per una classe di funzioni proprietà Original: Class-specific function properties The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
funzione virtuale ignorare specificatore (C++11) identificatore finale (C++11)	esplicito (C++11) statico
Funzioni membro speciali Original: Special member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
costruttore di default costruttore di copia spostare costruttore (C++11)	copiare assegnazione spostare l'assegnazione (C++11) distruttore
Modelli Original: Templates The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
classe template
funzione di modello
modello di specializzazione
parametri confezioni (C++11)
Varie Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Montaggio in linea

 

L'operatore noexcept esegue un controllo in fase di compilazione che restituisce true se l'espressione è dichiarato non gettare alcuna eccezione.

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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Può essere utilizzato all'interno di un modello di

noexcept specificatore

Original:

noexcept specifier

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funzione di dichiarare che la funzione genera eccezioni per alcuni ma non per altri tipi di.

Original:

It can be used within a function template's

noexcept specificatore

Original:

noexcept specifier

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to declare that the function will throw exceptions for some types but not others.

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Sintassi

noexcept( expression )

Restituisce un oggetto di tipo bool.

Original:

Returns an object of type bool.

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Spiegazione

L'operatore noexcept non expression valutare. Il risultato è false se la expression contiene almeno uno dei seguenti costrutti potenzialmente valutati:

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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• chiamare a qualsiasi tipo di funzione che non sono non-lancio specifica eccezione, a meno che non si tratta di un

  un'espressione costante

  Original:

  constant expression

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  .

  Original:

  call to any type of function that does not have non-throwing exception specification, unless it is a

  un'espressione costante

  Original:

  constant expression

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  .

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• throw espressione

  Original:

  throw expression

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• dynamic_cast espressione quando la conversione ha bisogno di un controllo di tempo di esecuzione

  Original:

  dynamic_cast expression when the conversion needs a run time check

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• typeid espressione quando il tipo di argomento è di tipo classe polimorfica

  Original:

  typeid expression when argument type is polymorphic class type

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In tutti gli altri casi il risultato è true.

Original:

In all other cases the result is true.

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Parole chiave

noexcept

Esempio

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;
}

Vedi anche

noexcept specificatore	richiede una funzione di gettare alcun (C++11) eccezioni 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.
un'eccezione specifica	specifica quali eccezioni vengono generate da un (deprecato) funzione Original: specifies what exceptions are thrown by a function (deprecato) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.