Enable JavaScript to interact with content and submit forms on Wolfram websites. Learn how

Wolfram Language & System Documentation Center

CreateUUID

CreateUUID

creates a random, universally unique UUID string.

CreateUUID["base"]

appends a UUID string to the specified base string.

Details

CreateUUID[] gives a UUID based on a 128-bit number, formatted as 32 hexadecimal digits grouped in the format 8-4-4-4-12.
CreateUUID[] is intended to produce a globally unique string that will statistically never be repeated.
CreateUUID[] makes use of detailed local system and session information, as well as absolute time.
CreateUUID[] is intended to generate a random distribution of UUIDs.
Some Wolfram System features depend on assuming the UUIDs will not collide.

Examples

open all close all

Basic Examples (1)

Create a random UUID:

Include a custom string:

Scope (2)

Create a random UUID:

Evaluating again gives a distinct UUID:

Create a random UUID using an explicit prefix:

Evaluating again gives a distinct UUID:

Properties & Relations (1)

Convert a UUID to a 128-bit integer:

Top