Namespace
Varianti

std::bitset::bitset

Da cppreference.com.
< cpp‎ | utility‎ | bitset

 
 
Utilità libreria
Tipo di supporto (basic types, RTTI, type traits)
Gestione della memoria dinamica
La gestione degli errori
Programma di utilità
Funzioni variadic
Data e ora
Funzione oggetti
initializer_list(C++11)
bitset
hash(C++11)
Gli operatori relazionali
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Coppie e tuple
Original:
Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Swap, in avanti e spostare
Original:
Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
std::bitset
Membri tipi
Original:
Member types
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bitset::reference
Membri funzioni
Original:
Member functions
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bitset::bitset
bitset::operator==
bitset::operator!=
Elemento accesso
Original:
Element access
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bitset::operator[]
bitset::test
bitset::all
bitset::any
bitset::none
(C++11)

 
bitset::count
Capacità
Original:
Capacity
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bitset::size
Modificatori
Original:
Modifiers
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bitset::operator&=
bitset::operator|=
bitset::operator^=
bitset::operator~
bitset::operator<<=
bitset::operator>>=
bitset::operator<<
bitset::operator>>
bitset::set
bitset::reset
bitset::flip
Conversioni
Original:
Conversions
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bitset::to_string
bitset::to_ulong
bitset::to_ullong(C++11)
Non membri funzioni
Original:
Non-member functions
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operator&
operator|
operator^
operator<<
operator>>
Helper classi
Original:
Helper classes
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std::hash(C++11)
 
constexpr bitset() noexcept;
(1)
constexpr bitset( unsigned long long val ) noexcept;
(2)
template< class CharT, class Traits, class Allocator >

explicit bitset( const std::basic_string<CharT,Traits,Allocator>& str,
                 typename std::basic_string<CharT,Traits,Allocator>::size_type pos = 0,
                 typename std::basic_string<CharT,Traits,Allocator>::size_type n =
                     std::basic_string<CharT,Traits,Allocator>::npos);

         bitset( const std::basic_string<CharT,Traits,Allocator>& str,
                 typename std::basic_string<CharT,Traits,Allocator>::size_type pos = 0,
                 typename std::basic_string<CharT,Traits,Allocator>::size_type n =
                     std::basic_string<CharT,Traits,Allocator>::npos,
                 CharT zero = CharT(0),

                 CharT one = CharT(1));
(3) (C fino + 11)



(dal C++11)
template< class CharT >

explicit bitset( const CharT* str,
                 typename std::basic_string<CharT>::size_type n =
                     std::basic_string<CharT>::npos,
                 CharT zero = CharT(0),

                 CharT one = CharT(1));
(4) (dal C++11)
Costruisce un nuovo bitset da una delle varie fonti di dati opzionali:
Original:
Constructs a new bitset from one of several optional data sources:
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1. Costruttore di default. Costruisce un bitset con tutti i bit impostati a zero.
Original:
1. Default constructor. Constructs a bitset with all bits set to zero.
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2. Costruisce un bitset utilizzando i bit in val. Se il N è la dimensione del bitset e M è il numero di bit impostati in val, poi solo min (N, M) bit sarà incluso nel bitset.
Original:
2. Constructs a bitset using the bits in val. If the N is the size of the bitset and M is the number of set bits in val, then only min(N, M) bits will be included in the bitset.
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3. Costruisce un bitset utilizzando i caratteri della std::basic_string str. Un pos opzionale posizione di partenza e n lunghezza può essere fornito, così come i caratteri che denotano valori alternativi per set (one) e unset (zero) bit.
Original:
3. Constructs a bitset using the characters in the std::basic_string str. An optional starting position pos and length n can be provided, as well as characters denoting alternate values for set (one) and unset (zero) bits.
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La lunghezza effettiva della stringa di inizializzazione è min (n, str.size() - pos).
Original:
The effective length of the initializing string is min(n, str.size() - pos).
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Se pos > str.size(), questo costruttore genera std::out_of_range. Se tutti i caratteri esaminati in str non sono zero o one, getta std::invalid_argument.
Original:
If pos > str.size(), this constructor throws std::out_of_range. If any characters examined in str are not zero or one, it throws std::invalid_argument.
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4. Simile a (3), ma utilizza un CharT* invece di un std::basic_string.
Original:
4. Similar to (3), but uses a CharT* instead of a std::basic_string.
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Indice

[modifica] Parametri

val -
Numero utilizzato per inizializzare il bitset
Original:
number used to initialize the bitset
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str -
stringa utilizzata per inizializzare il bitset
Original:
string used to initialize the bitset
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pos -
un offset iniziale in str
Original:
a starting offset into str
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n -
il numero di caratteri da utilizzare da str
Original:
number of characters to use from str
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one -
carattere alternativo per i bit impostati in str
Original:
alternate character for set bits in str
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zero -
carattere alternativo per i bit non impostate in str
Original:
alternate character for unset bits in str
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[modifica] Eccezioni

1. nessuno
Original:
1. none
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2. nessuno
Original:
2. none
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3. std::out_of_range if pos > str.size()

4. nessuno
Original:
4. none
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[modifica] Esempio

#include <bitset>
#include <string>
 
int main() 
{
    // empty constructor
    std::bitset<8> b1; // [0,0,0,0,0,0,0,0]
 
    // unsigned long long constructor
    std::bitset<8> b2(42); // [0,0,1,0,1,0,1,0]
 
    // string constructor
    std::string bit_string = "110010";
    std::bitset<8> b3(bit_string);       // [0,0,1,1,0,0,1,0]
    std::bitset<8> b4(bit_string, 2);    // [0,0,0,0,0,0,1,0]
    std::bitset<8> b5(bit_string, 2, 3); // [0,0,0,0,0,0,0,1]
 
    // string constructor using custom zero/one digits
    std::string alpha_bit_string = "aBaaBBaB";
    std::bitset<8> b6(alpha_bit_string, 0, alpha_bit_string.size(),
                      'a', 'B');         // [0,1,0,0,1,1,0,1]
 
    // char* constructor using custom digits
    std::bitset<8> b7("XXXXYYYY", 0, 'X', 'Y'); // [0,0,0,0,1,1,1,1]
    return 0;
}


[modifica] Vedi anche

sets bits to true or given value
(membro pubblico funzione) [edit]
imposta i bit a false
Original:
sets bits to false
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(membro pubblico funzione) [edit]