std::tuple_size(std::array)

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Contenitori libreria

array (C++11)

vector

deque

forward_list (C++11)

list

set

multiset

map

multimap

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

stack

queue

priority_queue

 

std::array

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Elemento accesso Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::at

array::operator[]

array::front

array::back

array::data

Iteratori Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::begin array::cbegin

array::end array::cend

array::rbegin array::crbegin

array::rend array::crend

Capacità Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::empty

array::size

array::max_size

Modificatori Original: Modifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::fill

array::swap

Non membri funzioni Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

get

swap

Helper classi Original: Helper classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

tuple_size

tuple_element

 

Elemento definito nell'header <array>
template<class T, size_t N > class tuple_size< array<T, N>>:     public integral_constant<size_t, N> {};	(1)	(dal C++11)

Consente di accedere al numero di elementi in un std::array come un tempo di compilazione espressione costante.

Original:

Provides access to the number of elements in an std::array as a compile-time constant expression.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Inherited from std::integral_constant

Member constants

value [statico]	N, the number of elements in the array (pubblico membro statico costante)

Member functions

operator std::size_t	converte l'oggetto in std::size_t, restituisce value Original: converts the object to std::size_t, returns value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)

Member types

Tipo Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
value_type	std::size_t
type	std::integral_constant<std::size_t, value>

Esempio

#include <iostream>#include <array>   template<class T>void test(T t){int a[std::tuple_size<T>::value];// can be used at compile timestd::cout<< std::tuple_size<T>::value<<'\n';}   int main(){std::array<float, 3> arr; test(arr);}

Output:

3

Vedi anche

tuple_size	ottiene la dimensione della tuple al momento della compilazione Original: obtains the size of tuple at compile time The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe modello di specializzazione)