| ActiveTcl User Guide |

[ Main table Of Contents | Tcllib Table Of Contents | Tcllib Index ]

# uuid(n) 1.0.4 "uuid"

## Name

uuid - UUID generation and comparison

## Table Of Contents

## Synopsis

- package require Tcl 8.2
- package require uuid ?1.0.4?

- ::uuid::uuid generate
- ::uuid::uuid equal id1 id2

## Description

This package provides a generator of universally unique identifiers (UUID) also known as globally unique identifiers (GUID). This implementation follows the draft specification from (1) although this is actually an expired draft document.

## COMMANDS

::uuid::uuid generate

  Creates a type 4 uuid by MD5 hashing a number of bits of variant data including the time and hostname. Returns the string representation of the new uuid.

::uuid::uuid equal id1 id2

  Compares two uuids and returns true if both arguments are the same uuid.

## EXAMPLES

    % uuid::uuid generate
    b12dc22c-5c36-41d2-57da-e29d0ef5839c

## REFERENCES

1. Paul J. Leach, "UUIDs and GUIDs", February 1998. (http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt)

## Bugs, Ideas, Feedback

This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category uuid of the Tcllib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.

## Keywords

GUID, UUID

## Category

Hashes, checksums, and encryption

## Copyright

Copyright © 2004, Pat Thoyts <patthoyts@users.sourceforge.net>

#### Copyright © 2015 for compilation: ActiveState