Namensräume
Varianten
Aktionen

std::tuple_size(std::array)

Aus cppreference.com
< cpp‎ | container‎ | array

This page has been machine-translated from the English version of the wiki using Google Translate.

The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

Click here for the English version of this page

 
C++
 
Container-Bibliothek
 
std::array
Member-Funktionen
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.
Elementzugriff zerstört
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
Iteratoren
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
Kapazität
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
Modifiers
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-Member-Funktionen
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-Klassen
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
 
definiert in Header <array>
template< class T, size_t N >

class tuple_size< array<T, N> > :
    public integral_constant<size_t, N>

{ };
 (1) (seit C++11)
Bietet Zugriff auf die Anzahl der Elemente in einem std::array als Compile-Zeit konstanter Ausdruck .
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.

Inhaltsverzeichnis

Inherited from std::integral_constant

Member constants

value
[statisch]
 N, the number of elements in the array
(public static Mitglied konstanten)

Member functions

operator std::size_t
wandelt das Objekt std::size_t, gibt 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.

(öffentliche Elementfunktion)

Member types

Type
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>

[Bearbeiten] Beispiel

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

Output: 

3

[Bearbeiten] Siehe auch
erhält die Größe der tuple bei der Kompilierung
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.

(class Template-Spezialisierung) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/container/array/tuple_size&oldid=29304“