Namespace
Varianti

std::unordered_set::size

Da cppreference.com.

 
 
 
std :: unordered_set
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.
unordered_set::unordered_set
unordered_set::~unordered_set
unordered_set::operator=
unordered_set::get_allocator
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.
unordered_set::begin
unordered_set::cbegin
unordered_set::end
unordered_set::cend
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.
unordered_set::erase
unordered_set::size
unordered_set::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.
unordered_set::clear
unordered_set::insert
unordered_set::emplace
unordered_set::emplace_hint
unordered_set::erase
unordered_set::swap
Lookup
Original:
Lookup
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_set::count
unordered_set::find
unordered_set::equal_range
Benna interfaccia
Original:
Bucket interface
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_set::begin2
unordered_set::end2
unordered_set::bucket_count
unordered_set::max_bucket_count
unordered_set::bucket_size
unordered_set::bucket
Politica di Hash
Original:
Hash policy
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_set::load_factor
unordered_set::max_load_factor
unordered_set::rehash
unordered_set::reserve
Osservatori
Original:
Observers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_set::hash_function
unordered_set::key_eq
 
size_type size() const;
(dal C++11)

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

Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[modifica] Valore di ritorno

il numero di elementi nel contenitore
Original:
the number of elements in the container
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[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::unordered_set<int>:

#include <unordered_set>
#include <iostream>
 
int main()
{
    std::unordered_set<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
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(membro pubblico funzione) [edit]
restituisce il massimo numero possibile di elementi
Original:
returns the maximum possible number of elements
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(membro pubblico funzione) [edit]