std::vector<bool>::reference

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Containers library

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

span (C++20)

 

std::vector<bool>

Member functions

vector::vector

vector::~vector

vector::operator=

vector::assign

vector::get_allocator

Element access

vector::at

vector::operator[]

vector::front

vector::back

Iterators

vector::beginvector::cbegin (C++11)

vector::endvector::cend (C++11)

vector::rbeginvector::crbegin (C++11)

vector::rendvector::crend (C++11)

Capacity

vector::empty

vector::size

vector::max_size

vector::reserve

vector::capacity

Modifiers

vector::clear

vector::insert

vector::erase

vector::push_back

vector::pop_back

vector::resize

vector::swap

Helper classes

std::hash (C++11)

std::vector<bool> specific

vector<bool>::flip

vector<bool>::swap

 

class reference;

The std::vector<bool> specialization defines std::vector<bool>::reference as a publicly-accessible nested class. std::vector<bool>::reference proxies the behavior of references to a single bit in std::vector<bool>.

The primary use of std::vector<bool>::reference is to provide an l-value that can be returned from operator[].

Any reads or writes to a vector that happen via a std::vector<bool>::reference potentially read or write to the entire underlying vector.

Member functions

(constructor)	constructs the reference. Accessible only to std::vector<bool> itself (public member function)
(destructor)	destroys the reference (public member function)
operator=	assigns a bool to the referenced bit (public member function)
operator bool	returns the referenced bit (public member function)
flip	flips the referenced bit (public member function)

std::vector<bool>::reference::~reference

~reference()

Destroys the reference.

std::vector<bool>::reference::operator=

reference& operator=( bool x ); reference& operator=( const reference& x );		(until C++11)
reference& operator=( bool x ) noexcept; reference& operator=( const reference& x ) noexcept;		(since C++11)

Assigns a value to the referenced bit.

Parameters

x

-

value to assign

Return value

*this

std::vector<bool>::reference::operator bool

operator bool() const;		(until C++11)
operator bool() const noexcept;		(since C++11)

Returns the value of the referenced bit.

Parameters

(none)

Return value

The referenced bit.

std::vector<bool>::reference::flip

void flip();		(until C++11)
void flip() noexcept;		(since C++11)

Inverts the referenced bit.

Parameters

(none)

Return value

(none)

See also

operator[]	access specified element (public member function of std::vector<T,Allocator>)
swap [static]	swaps two std::vector<bool>::references (public static member function)