class reference; |
The std::bitset class includes std::bitset::reference as a publicly-accessible nested class. This class is used as a proxy object to allow users to interact with individual bits of a bitset, since standard C++ types (like references and pointers) are not built with enough precision to specify individual bits.
The primary use of std::bitset::reference is to provide an l-value that can be returned from operator[].
Any reads or writes to a bitset that happen via a std::bitset::reference potentially read or write to the entire underlying bitset.
Member functions
| (constructor) | constructs the reference. Accessible only to std::bitset itself (private member function) |
| (destructor) | ~reference (public member function) |
| operator= | assigns a bool to the referenced bit (public member function) |
| operator bool | returns the referenced bit (public member function) |
| operator ~ | returns inverted referenced bit (public member function) |
| flip | flips the referenced bit (public member function) |
std::bitset<N>::reference::~reference
~reference() |
Destroys the reference.
std::bitset<N>::reference::operator=
reference& operator=( bool x ); reference& operator=( const reference& x ); |
Assigns a value to the referenced bit.
Parameters
| x | - | value to assign |
Return value
*this.
Exceptions
| (none) | (until C++11) |
noexcept specification: noexcept | (since C++11) |
std::bitset<N>::reference::operator bool
operator bool() const; |
Returns the value of the referenced bit.
Parameters
(none).
Return value
The referenced bit.
Exceptions
| (none) | (until C++11) |
noexcept specification: noexcept | (since C++11) |
std::bitset<N>::reference::operator~
bool operator~() const; |
Returns the inverse of the referenced bit.
Parameters
(none).
Return value
The inverse of the referenced bit.
Exceptions
| (none) | (until C++11) |
noexcept specification: noexcept | (since C++11) |
std::bitset<N>::reference::flip
reference& flip(); |
Inverts the referenced bit.
Parameters
(none).
Return value
*this.
Exceptions
| (none) | (until C++11) |
noexcept specification: noexcept | (since C++11) |
See also
| accesses specific bit (public member function) |
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