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std::array::size

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C++
 
Container-Bibliothek
 
std::array
Member-Funktionen
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Member functions
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Elementzugriff zerstört
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Element access
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array::at
array::operator[]
array::front
array::back
array::data
Iteratoren
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Iterators
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array::begin
array::cbegin
array::end
array::cend
array::rbegin
array::crbegin
array::rend
array::crend
Kapazität
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Capacity
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array::empty
array::size
array::max_size
Modifiers
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Modifiers
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array::fill
array::swap
Non-Member-Funktionen
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Non-member functions
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get
swap
Helper-Klassen
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Helper classes
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tuple_size
tuple_element
 
constexpr size_type size()
 (seit C++11)

Returns the number of elements in the container, i.e. std::distance(begin(), end()).

Inhaltsverzeichnis

[Bearbeiten] Parameter

(None)
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(none)
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[Bearbeiten] Rückgabewert

die Anzahl der Elemente in dem Behälter
Original:
the number of elements in the container
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[Bearbeiten] Ausnahmen

noexcept specification:  
noexcept
  (seit C++11)

[Bearbeiten] Komplexität

Constant

[Bearbeiten] Beispiel

The following code uses size to display the number of elements in a std::array<int>: 

#include <array>
#include <iostream>
 
int main()
{
    std::array<int> nums {1, 3, 5, 7};
 
    std::cout << "nums contains " << nums.size() << " elements.\n";
}

Output: 

nums contains 4 elements.

[Bearbeiten] Siehe auch
prüft, ob der Container leer ist
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checks whether the container is empty
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(öffentliche Elementfunktion) [edit]
gibt die maximal mögliche Anzahl von Elementen
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returns the maximum possible number of elements
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(öffentliche Elementfunktion) [edit]
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