ignite::uuid Class Reference

Universally unique identifier (UUID). More...

#include <uuid.h>

Public Member Functions
constexpr	uuid () noexcept=default
constexpr	uuid (std::int64_t most, std::int64_t least) noexcept
constexpr std::int64_t	get_most_significant_bits () const noexcept
constexpr std::int64_t	get_least_significant_bits () const noexcept
constexpr std::int32_t	version () const noexcept
constexpr std::int32_t	variant () const noexcept
constexpr int	compare (const uuid &other) const noexcept

Static Public Member Functions
static uuid	random ()

Detailed Description

Universally unique identifier (UUID).

Minimalistic implementation that mimics JDK java.util.UUID.

Constructor & Destructor Documentation

uuid() [1/2]

ignite::uuid::uuid ( )

constexprdefaultnoexcept

Default constructor.

uuid() [2/2]

ignite::uuid::uuid ( std::int64_t most, std::int64_t least )

inlineconstexprnoexcept

Constructor.

Parameters

most	Most significant bits.
least	Least significant bits.

Member Function Documentation

compare()

int ignite::uuid::compare ( const uuid & other ) const

inlinenodiscardconstexprnoexcept

compare to another value.

Parameters

other

Instance to compare to.

Returns

Zero if equals, negative number if less, and positive if greater.

get_least_significant_bits()

std::int64_t ignite::uuid::get_least_significant_bits ( ) const

inlinenodiscardconstexprnoexcept

Returns the least significant 64 bits of this instance.

Returns

The least significant 64 bits of this instance.

get_most_significant_bits()

std::int64_t ignite::uuid::get_most_significant_bits ( ) const

inlinenodiscardconstexprnoexcept

Returns the most significant 64 bits of this instance.

Returns

The most significant 64 bits of this instance.

random()

uuid ignite::uuid::random ( )

staticnodiscard

Make random UUID.

Returns

Randomly generated UUID instance.

variant()

std::int32_t ignite::uuid::variant ( ) const

inlinenodiscardconstexprnoexcept

The variant number associated with this instance. The variant number describes the layout of the uuid.

The variant number has the following meaning: 0 Reserved for NCS backward compatibility; 2 IETF RFC 4122 (Leach-Salz), used by this class; 6 Reserved, Microsoft Corporation backward compatibility; 7 Reserved for future definition.

Returns

The variant number of this instance.

version()

std::int32_t ignite::uuid::version ( ) const

inlinenodiscardconstexprnoexcept

The version number associated with this instance. The version number describes how this uuid was generated.

The version number has the following meaning: 1 Time-based UUID; 2 DCE security UUID; 3 Name-based UUID; 4 Randomly generated UUID.

Returns

The version number of this instance.

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

• ignite/common/uuid.h
• ignite/common/uuid.cpp