Namespace
Varianti

std::array::size

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< cpp‎ | container‎ | array

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C++
 
Contenitori libreria
 
std::array
Membri funzioni
Original:
Member functions
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Elemento accesso
Original:
Element access
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array::at
array::operator[]
array::front
array::back
array::data
Iteratori
Original:
Iterators
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array::begin
array::cbegin
array::end
array::cend
array::rbegin
array::crbegin
array::rend
array::crend
Capacità
Original:
Capacity
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array::empty
array::size
array::max_size
Modificatori
Original:
Modifiers
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array::fill
array::swap
Non membri funzioni
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Non-member functions
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get
swap
Helper classi
Original:
Helper classes
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tuple_size
tuple_element
 
constexpr size_type size()
 (dal C++11)

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

Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
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[modifica] Valore di ritorno

il numero di elementi nel contenitore
Original:
the number of elements in the container
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[modifica] Eccezioni

noexcept specification:  
noexcept
  (dal C++11)

[modifica] Complessità

Constant

[modifica] Esempio

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.

[modifica] Vedi anche
verifica se il contenitore è vuoto
Original:
checks whether the container is empty
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(metodo pubblico) [modifica]
restituisce il massimo numero possibile di elementi
Original:
returns the maximum possible number of elements
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(metodo pubblico) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/container/array/size&oldid=25131"