ludus::foundation::identity::Uuid¶

Struct

A 128-bit UUID in canonical (RFC 9562 network) byte order.

Byte 0 is the first byte of the text form. The value is a plain byte array: never reinterpret it as native-endian integers or a platform GUID structure. Store exactly these 16 bytes in versioned binary formats. The all-zero nil value is an explicit absent-reference sentinel and is never a valid identity. Hash the bytes with FoundationHash when a table needs an accelerator; full-byte equality, not a hash, decides identity.

Declared in modules/foundation/identity/include/ludus/foundation/identity/uuid.hpp

#include <ludus/foundation/identity/uuid.hpp>

struct ludus::foundation::identity::Uuid final

Fields¶

Bytes¶

uint8 ludus::foundation::identity::Uuid::Bytes[UUID_BYTE_COUNT][UUID_BYTE_COUNT] = {}

Canonical bytes. A raw array keeps this value header free of container headers (FoundationIdentity depends only on FoundationBase).

Related types: uint8

Declared in modules/foundation/identity/include/ludus/foundation/identity/uuid.hpp

Methods¶

operator==¶

constexpr bool ludus::foundation::identity::Uuid::operator==(const Uuid &) const noexcept=default

Compare all 16 bytes exactly.

Related types: Uuid

Declared in modules/foundation/identity/include/ludus/foundation/identity/uuid.hpp

IsNil¶

LUDUS_INLINE constexpr bool ludus::foundation::identity::Uuid::IsNil() const noexcept

Report whether every byte is zero (the nil UUID).

Declared in modules/foundation/identity/include/ludus/foundation/identity/uuid.hpp

GetVersion¶

LUDUS_INLINE constexpr uint8 ludus::foundation::identity::Uuid::GetVersion() const noexcept

Return the RFC 9562 version field (the high four bits of the version byte). Meaningful only when HasStandardVariant() is true.

Related types: uint8

Declared in modules/foundation/identity/include/ludus/foundation/identity/uuid.hpp

HasStandardVariant¶

LUDUS_INLINE constexpr bool ludus::foundation::identity::Uuid::HasStandardVariant() const noexcept

Report whether the variant field (the high two bits of the variant byte) is the RFC 9562 variant 10.

Declared in modules/foundation/identity/include/ludus/foundation/identity/uuid.hpp