Namespace
Varianti

Function template

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C++
 
Linguaggio C + +
Temi generali
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General topics
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Controllo del flusso
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Flow control
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Dichiarazioni esecuzione condizionale
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Conditional execution statements
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Iterazione dichiarazioni
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Iteration statements
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Vai dichiarazioni
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Jump statements
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Funzioni
Original:
Functions
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dichiarazione di funzione
lambda funzione dichiarazione
funzione di modello
specificatore inline
eccezioni specifiche (deprecato)
noexcept specificatore (C++11)
Eccezioni
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Exceptions
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Spazi dei nomi
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Namespaces
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Tipi
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Types
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decltype specifier (C++11)
Specifiers
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Specifiers
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cv specificatori
Durata di stoccaggio specificatori
constexpr specificatore (C++11)
specificatore auto (C++11)
alignas specificatore (C++11)
Inizializzazione
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Initialization
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Letterali
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Literals
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Espressioni
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Expressions
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rappresentazioni alternative
Utilities
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Utilities
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Tipi
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Types
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typedef declaration
Tipo alias dichiarazione (C++11)
attributi (C++11)
Lancia
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Casts
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conversioni implicite
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
Fusione C-stile e funzionale
Occupazione della memoria
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Memory allocation
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Classi
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Classes
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Specifiche per una classe di funzioni proprietà
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Class-specific function properties
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esplicito (C++11)
statico
Funzioni membro speciali
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Special member functions
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Modelli
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Templates
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classe template
funzione di modello
modello di specializzazione
parametri confezioni (C++11)
Varie
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Miscellaneous
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Montaggio in linea
 

Indice

[modifica] Descrizione

Modelli consentono disegno generico funzione che opera su vari tipi, senza la necessità di riscrivere più volte
Original:
Templates allow generic function design that work on various types, without the need of rewriting it multiple times
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[modifica] Sintassi

[modifica] Dichiarazione

template < template_arguments > function_declaration (1)
export template < template_arguments > function_declaration (2) (fino al c++11)
# Modello dichiarazione di funzione Errore nella funzione Cite: </ref> di chiusura mancante per il marcatore <ref>
Original:
{{{2}}}
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# Esportati funzione dichiarazione modello. Il corpo della funzione può essere definito in un file separato Errore nella funzione Cite: </ref> di chiusura mancante per il marcatore <ref>
Original:
{{{2}}}
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[modifica] Argomenti

class identifier (1)
typename identifier (2)
integral_type identifier (3)
class identifier = type_name (4) (dal C++11)
typename identifier = type_name (5) (dal C++11)
integral_type identifier = const_expr (6) (dal C++11)
1-2)
All'interno della funzione identifier può essere usata come tipo
Original:
Inside the function identifier can be used as a type
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3)
All'interno della funzione identifier può essere usato come una costante
Original:
Inside the function identifier can be used as a constant
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4-6)
Predefiniti argomenti
Original:
Default arguments
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[modifica] Specializzazione

This section is incomplete
Reason: partial specialization
template <> ret function_name < template_args > ( func_args ) body
Specializzazione cambia l'implementazione della funzione di modello per modello di parametri specifici
Original:
Specialization changes the implementation of the template function for specific template parameters
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[modifica] Chiama

function_name < template_args > ( func_args ) (1)
function_name ( unambiguous_func_args ) (2)
Argomenti di modello # espliciti, se func_args non corrispondono perfettamente con i tipi come nel modello di dichiarazione (con la template_args dato) il casting di consueto si verificherà
Original:
# Explicit template arguments, if func_args don't match perfectly with the types as in the template declaration (with the given template_args) the usual casting will occur
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Argomenti di modello # impliciti, desumibili dagli argomenti della funzione. Nessuna ambiguità può essere presente
Original:
# Implicit template arguments, deduced from the function arguments. No ambiguity can be present
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This section is incomplete
Reason: better explanation/example

[modifica] Esempio

This section is incomplete
[edit]
template<typename T>
struct S {
    template<typename U> void foo(){}
};
 
template<typename T>
void bar()
{
    S<T>s;
    s.foo<T>(); // error: < parsed as less than operator
    s.template foo<T>(); // OK
}


[modifica] Vedere anche

[modifica] Note

Original:
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Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/language/function_template&oldid=25951"