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std::bitset::operator[]

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< cpp‎ | utility‎ | bitset
 
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
(C++11)
Operadores relacionales
Original:
Relational operators
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Pares y tuplas
Original:
Pairs and tuples
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(C++11)
Cambiar, hacia adelante y mover
Original:
Swap, forward and move
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(C++11)
(C++11)
(C++11)
 
std::bitset
Tipos de miembros
Original:
Member types
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Las funciones miembro
Original:
Member functions
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Elemento acceso
Original:
Element access
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bitset::operator[]
Capacidad
Original:
Capacity
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Modificadores
Original:
Modifiers
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Conversiones
Original:
Conversions
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Terceros funciones
Original:
Non-member functions
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Clases de ayuda
Original:
Helper classes
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(C++11)
 
bool operator[]( std::size_t pos ) const;
constexpr bool operator[]( std::size_t pos ) const;
(1) (hasta C++11)
(desde C++11)
reference operator[]( std::size_t pos );
(2)
Accede a la broca en pos posición. La primera versión retorna el valor del bit, la segunda versión devuelve un objeto de tipo std::bitset::reference que permite la modificación del valor .
Original:
Accesses the bit at position pos. The first version returns the value of the bit, the second version returns an object of type std::bitset::reference that allows modification of the value.
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A diferencia de test(), no lanza excepciones: el comportamiento es indefinido si pos está fuera de límites .
Original:
Unlike test(), does not throw exceptions: the behavior is undefined if pos is out of bounds.
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Contenido

[editar] Parámetros

pos -
posición del bit para volver
Original:
position of the bit to return
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[editar] Valor de retorno

1)
el valor del bit solicitado
Original:
the value of the requested bit
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2)
un objeto de std::bitset::reference tipo, que permite escribir en el bit solicitado .
Original:
an object of type std::bitset::reference, which allows writing to the requested bit.
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[editar] Excepciones

Ninguno
Original:
None
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[editar] Ejemplo

#include <iostream>
#include <bitset>
 
int main()
{
    std::bitset<8> b1(42);
    for (std::size_t i = 0; i < b1.size(); ++i) {
        std::cout << "b1[" << i << "]: " << b1[i] << '\n';
    }
    b1[0] = true; // modifies the first bit through bitset::refence
    std::cout << "After setting bit 0, the bitset holds " << b1 << '\n';
}

Salida:

b1[0]: 0
b1[1]: 1
b1[2]: 0
b1[3]: 1
b1[4]: 0
b1[5]: 1
b1[6]: 0
b1[7]: 0
After setting bit 0, bitset is 00101011

[editar] Ver también

accede a poco específica
Original:
accesses specific bit
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(función miembro público) [editar]