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uuid.pl -- Universally Unique Identifier (UUID) Library
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The library provides operations on UUIDs. Please consult other sources for understanding UUIDs and the implications of the different UUID versions. Some typical calls are given below:

?- uuid(X).
X = 'ea6589fa-19dd-11e2-8a49-001d92e1879d'.

?- uuid(X, [url('http://www.swi-prolog.org')]).
X = '73a07870-6a90-3f2e-ae2b-ffa538dc7c2c'.
See also
- http://www.ossp.org/pkg/lib/uuid/
To be done
- Compare UUIDs, extract time and version from UUIDs
Source uuid(-UUID) is det
UUID is an atom representing a new UUID. This is the same as calling uuid(UUID, []). See uuid/2 for options.
Source uuid(-UUID, +Options) is det
Create a new UUID according to Options. The following options are defined:
version(+Versions)
Integer in the range 1..5, which specifies the UUID version that is created. Default is 1.
dns(DNS)
url(URL)
oid(OID)
x500(X500)
Provide additional context information for UUIDs using version 3 or 5. If there is no explicit version option, UUID version 3 is used.
format(+Format)
Representation of the UUID. Default is atom, yielding atoms such as 8304efdd-bd6e-5b7c-a27f-83f3f05c64e0. The alternative is integer, returning a large integer that represents the 128 bits of the UUID.