std::vector<bool>::reference
< cpp | container | vector bool
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class reference;
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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
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(constructor)
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constructs the reference. Accessible only to std::vector<bool> itself (public member function) |
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(destructor)
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destroys the reference (public member function) |
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operator=
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assigns a bool to the referenced bit (public member function) |
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operator bool
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returns the referenced bit (public member function) |
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flip
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flips the referenced bit (public member function) |
std::vector<bool>::reference::~reference
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~reference();
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(until C++20) | |
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constexpr ~reference();
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(since C++20) | |
Destroys the reference.
std::vector<bool>::reference::operator=
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reference& operator=( bool x );
reference& operator=( const reference& x ); |
(until C++11) | |
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reference& operator=( bool x ) noexcept;
reference& operator=( const reference& x ) noexcept; |
(since C++11) (until C++20) |
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constexpr reference& operator=( bool x ) noexcept;
constexpr reference& operator=( const reference& x ) noexcept; |
(since C++20) | |
Assigns a value to the referenced bit.
Parameters
| x | - | value to assign |
Return value
*this
std::vector<bool>::reference::operator bool
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operator bool() const;
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(until C++11) | |
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operator bool() const noexcept;
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(since C++11) (until C++20) |
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constexpr operator bool() const noexcept;
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(since C++20) | |
Returns the value of the referenced bit.
Parameters
(none)
Return value
The referenced bit.
std::vector<bool>::reference::flip
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void flip();
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(until C++11) | |
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void flip() noexcept;
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(since C++11) (until C++20) |
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constexpr void flip() noexcept;
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(since C++20) | |
Inverts the referenced bit.
Parameters
(none)
Return value
(none)
Example
| This section is incomplete Reason: no example |
See also
| access specified element (public member function of std::vector<T,Allocator>) |
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[static]
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swaps two std::vector<bool>::references(public static member function) |