Uuid Class Reference
juce_core » misc

A universally unique 128-bit identifier. More...

## Public Member Functions

| Uuid ()
| Creates a new unique ID, compliant with RFC 4122 version 4. More...
| ~Uuid () noexcept
| Destructor. More...
| Uuid (const Uuid &) noexcept
| Creates a copy of another UUID. More...
Uuid & | operator= (const Uuid &) noexcept
| Copies another UUID. More...
bool | isNull () const noexcept
| Returns true if the ID is zero. More...
bool | operator== (const Uuid &) const noexcept
bool | operator!= (const Uuid &) const noexcept
bool | operator< (const Uuid &) const noexcept
bool | operator> (const Uuid &) const noexcept
bool | operator<= (const Uuid &) const noexcept
bool | operator>= (const Uuid &) const noexcept
String | toString () const
| Returns a stringified version of this UUID. More...
String | toDashedString () const
| Returns a stringified version of this UUID, separating it into sections with dashes. More...
| Uuid (const String &uuidString)
| Creates an ID from an encoded string version. More...
Uuid & | operator= (const String &uuidString)
| Copies from a stringified UUID. More...
uint32 | getTimeLow () const noexcept
| Returns the time-low section of the UUID. More...
uint16 | getTimeMid () const noexcept
| Returns the time-mid section of the UUID. More...
uint16 | getTimeHighAndVersion () const noexcept
| Returns the time-high-and-version section of the UUID. More...
uint8 | getClockSeqAndReserved () const noexcept
| Returns the clock-seq-and-reserved section of the UUID. More...
uint8 | getClockSeqLow () const noexcept
| Returns the clock-seq-low section of the UUID. More...
uint64 | getNode () const noexcept
| Returns the node section of the UUID. More...
uint64 | hash () const noexcept
| Returns a hash of the UUID. More...
const uint8 * | getRawData () const noexcept
| Returns a pointer to the internal binary representation of the ID. More...
| Uuid (const uint8 *rawData) noexcept
| Creates a UUID from a 16-byte array. More...
Uuid & | operator= (const uint8 *rawData) noexcept
| Sets this UUID from 16-bytes of raw data. More...

## Static Public Member Functions

static Uuid | null () noexcept
| Returns a null Uuid object. More...

## Detailed Description

A universally unique 128-bit identifier.

This class generates very random unique numbers. It's vanishingly unlikely that two identical UUIDs would ever be created by chance. The values are formatted to meet the RFC 4122 version 4 standard.

The class includes methods for saving the ID as a string or as raw binary data.

## Constructor & Destructor Documentation

## Uuid() [1/4]

Uuid::Uuid | ( |  | ) |

Creates a new unique ID, compliant with RFC 4122 version 4.

## ~Uuid()

Uuid::~Uuid | ( |  | ) |

noexcept

Destructor.

## Uuid() [2/4]

Uuid::Uuid | ( | const Uuid & |  | ) |

noexcept

Creates a copy of another UUID.

## Uuid() [3/4]

Uuid::Uuid | ( | const String & | uuidString | ) |

Creates an ID from an encoded string version.

See also
  toString

## Uuid() [4/4]

Uuid::Uuid | ( | const uint8 * | rawData | ) |

noexcept

Creates a UUID from a 16-byte array.

See also
  getRawData

## Member Function Documentation

## operator=() [1/3]

Uuid& Uuid::operator= | ( | const Uuid & |  | ) |

noexcept

Copies another UUID.

## isNull()

bool Uuid::isNull | ( |  | ) | const

noexcept

Returns true if the ID is zero.

## null()

static Uuid Uuid::null | ( |  | ) |

static noexcept

Returns a null Uuid object.

## operator==()

bool Uuid::operator== | ( | const Uuid & |  | ) | const

noexcept

## operator!=()

bool Uuid::operator!= | ( | const Uuid & |  | ) | const

noexcept

## operator<()

bool Uuid::operator< | ( | const Uuid & |  | ) | const

noexcept

## operator>()

bool Uuid::operator> | ( | const Uuid & |  | ) | const

noexcept

## operator<=()

bool Uuid::operator<= | ( | const Uuid & |  | ) | const

noexcept

## operator>=()

bool Uuid::operator>= | ( | const Uuid & |  | ) | const

noexcept

## toString()

String Uuid::toString | ( |  | ) | const

Returns a stringified version of this UUID.

A Uuid object can later be reconstructed from this string using operator= or the constructor that takes a string parameter.

Returns
  a 32 character hex string.

## toDashedString()

String Uuid::toDashedString | ( |  | ) | const

Returns a stringified version of this UUID, separating it into sections with dashes.

Returns
  a string in the format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

## operator=() [2/3]

Uuid& Uuid::operator= | ( | const String & | uuidString | ) |

Copies from a stringified UUID.

The string passed in should be one that was created with the toString() method.

## getTimeLow()

uint32 Uuid::getTimeLow | ( |  | ) | const

noexcept

Returns the time-low section of the UUID.

## getTimeMid()

uint16 Uuid::getTimeMid | ( |  | ) | const

noexcept

Returns the time-mid section of the UUID.

## getTimeHighAndVersion()

uint16 Uuid::getTimeHighAndVersion | ( |  | ) | const

noexcept

Returns the time-high-and-version section of the UUID.

## getClockSeqAndReserved()

uint8 Uuid::getClockSeqAndReserved | ( |  | ) | const

noexcept

Returns the clock-seq-and-reserved section of the UUID.

## getClockSeqLow()

uint8 Uuid::getClockSeqLow | ( |  | ) | const

noexcept

Returns the clock-seq-low section of the UUID.

## getNode()

uint64 Uuid::getNode | ( |  | ) | const

noexcept

Returns the node section of the UUID.

## hash()

uint64 Uuid::hash | ( |  | ) | const

noexcept

Returns a hash of the UUID.

## getRawData()

const uint8* Uuid::getRawData | ( |  | ) | const

noexcept

Returns a pointer to the internal binary representation of the ID.

This is an array of 16 bytes. To reconstruct a Uuid from its data, use the constructor or operator= method that takes an array of uint8s.

## operator=() [3/3]

Uuid& Uuid::operator= | ( | const uint8 * | rawData | ) |

noexcept

Sets this UUID from 16-bytes of raw data.

The documentation for this class was generated from the following file:

- juce_Uuid.h