`uuid_protocol`

Universally unique identifier (UUID) generator protocol.

| Availability: | logtalk_load(uuid(loader))

| Author: Paulo Moura | Version: 0:5:0 | Date: 2026-02-04

| Compilation flags: | static

| Dependencies: | (none)

| Remarks: | (none)

| Inherited public predicates: | (none)

.. contents:: :local: :backlinks: top

Public predicates

.. index:: uuid_v1/2 .. _uuid_protocol/0::uuid_v1/2:

uuid_v1/2 ^^^^^^^^^^^^^

Returns a version 1 UUID for the given MAC address (a list of six bytes). The MAC address can be replaced by a random 6 bytes node identifier as per RFC 4122 when the MAC address is not available or should not be disclosed.

| Compilation flags: | static

| Template: | uuid_v1(MAC,UUID) | Mode and number of proofs: | uuid_v1(+list(byte),--ground) - one

.. index:: uuid_v4/1 .. _uuid_protocol/0::uuid_v4/1:

uuid_v4/1 ^^^^^^^^^^^^^

Returns a version 4 UUID.

| Compilation flags: | static

| Template: | uuid_v4(UUID) | Mode and number of proofs: | uuid_v4(--ground) - one

.. index:: uuid_v7/1 .. _uuid_protocol/0::uuid_v7/1:

uuid_v7/1 ^^^^^^^^^^^^^

Returns a version 7 UUID.

| Compilation flags: | static

| Template: | uuid_v7(UUID) | Mode and number of proofs: | uuid_v7(--ground) - one

.. index:: uuid_null/1 .. _uuid_protocol/0::uuid_null/1:

uuid_null/1 ^^^^^^^^^^^^^^^

Returns the null UUID. Deprecated. Use uuid_nil/1 instead.

| Compilation flags: | static

| Template: | uuid_null(UUID) | Mode and number of proofs: | uuid_null(--ground) - one

.. index:: uuid_nil/1 .. _uuid_protocol/0::uuid_nil/1:

uuid_nil/1 ^^^^^^^^^^^^^^

Returns the Nil UUID.

| Compilation flags: | static

| Template: | uuid_nil(UUID) | Mode and number of proofs: | uuid_nil(--ground) - one

.. index:: uuid_max/1 .. _uuid_protocol/0::uuid_max/1:

uuid_max/1 ^^^^^^^^^^^^^^

Returns the Max UUID.

| Compilation flags: | static

| Template: | uuid_max(UUID) | Mode and number of proofs: | uuid_max(--ground) - one

.. index:: random_node/1 .. _uuid_protocol/0::random_node/1:

random_node/1 ^^^^^^^^^^^^^^^^^

Generates a list with six random bytes that can be used in alternative to a MAC address when generating version 1 UUIDs.

| Compilation flags: | static

| Template: | random_node(Node) | Mode and number of proofs: | random_node(--list(byte)) - one

Protected predicates

(none)

Private predicates

(none)

Operators

(none)