std::deque::size

 

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 :: deque

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.

deque::deque

deque::~deque

deque::operator=

deque::assign

deque::get_allocator

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.

deque::front

deque::back

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.

deque::begin deque::cbegin (C++11)

deque::end deque::cend (C++11)

deque::rbegin deque::crbegin (C++11)

deque::rend deque::crend (C++11)

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.

deque::empty

deque::size

deque::max_size

deque::shrink_to_fit

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.

deque::clear

deque::insert

deque::emplace

deque::erase

deque::push_front

deque::emplace_front

deque::pop_front

deque::push_back

deque::emplace_back

deque::pop_back

deque::resize

deque::swap

 

size_type size()const;

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

Parametri

(Nessuno)

Original:

(none)

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Valore di ritorno

il numero di elementi nel contenitore

Original:

the number of elements in the container

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Eccezioni

noexcept specification:  

noexcept

  (dal C++11)

Complessità

Constant

Esempio

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

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

Output:

nums contains 4 elements.

Vedi anche

empty	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. (metodo pubblico)
max_size	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. (metodo pubblico)
resize	changes the number of elements stored (metodo pubblico)