---
name: "std::tr2::dynamic_bitset_reference"
section: "3cxx"
platform: "linux"
package: "libstdc++-12-doc"
version: "12.4.0-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/std::tr2::dynamic_bitset_reference/3cxx"
---

# std::tr2::dynamic\_bitset\_reference(3cxx)

## NAME

std::tr2::dynamic\_bitset\< \_WordT, \_Alloc \>::reference

## SYNOPSIS

`#include <dynamic_bitset>`

### Public Member Functions

**reference** (**dynamic\_bitset** &\_\_b, size\_type **\_\_pos**) noexcept\
 **reference** & **flip** () noexcept\
 **operator bool** () const noexcept\
 **reference** & **operator=** (bool \_\_x) noexcept\
 **reference** & **operator=** (const **reference** &\_\_j) noexcept\
 bool **operator~** () const noexcept\

### Friends

**class** **dynamic\_bitset**\

## Detailed Description

### template\<typename \_WordT = unsigned long long, typename \_Alloc = std::allocator\<\_WordT\>\>

class std::tr2::dynamic\_bitset\< \_WordT, \_Alloc \>::reference"This encapsulates the concept of a single bit. An instance of this class is a proxy for an actual bit; this way the individual bit operations are done as faster word-size bitwise instructions.

Most users will never need to use this class directly; conversions to and from bool are automatic and should be transparent. Overloaded operators help to preserve the illusion.

(On a typical system, this 'bit %reference' is 64 times the size of an actual bit. Ha.)

## Author

Generated automatically by Doxygen for libstdc++ from the source code.