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cpp/container/multimap/size: differenze tra le versioni

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Versione attuale delle 12:40, 2 lug 2013

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C++
 
Contenitori libreria
 
std::multimap
Membri funzioni
Original:
Member functions
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multimap::multimap
multimap::~multimap
multimap::operator=
multimap::get_allocator
Iteratori
Original:
Iterators
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multimap::begin
multimap::cbegin
(C++11)
multimap::end
multimap::cend
(C++11)
multimap::rbegin
multimap::crbegin
(C++11)
multimap::rend
multimap::crend
(C++11)
Capacità
Original:
Capacity
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multimap::erase
multimap::size
multimap::max_size
Modificatori
Original:
Modifiers
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multimap::clear
multimap::insert
multimap::emplace(C++11)
multimap::emplace_hint(C++11)
multimap::erase
multimap::swap
Lookup
Original:
Lookup
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multimap::count
multimap::find
multimap::equal_range
multimap::lower_bound
multimap::upper_bound
Osservatori
Original:
Observers
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multimap::key_comp
multimap::value_comp
 
size_type size() const;

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::multimap<int>: 

#include <multimap>
#include <iostream>
 
int main()
{
    std::multimap<int, char> nums {{1, 'a'}, {3, 'b'}, {5, 'c'}, {7, 'd'}};
 
    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]
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