UUIDs · The Julia Language

UUIDs

# UUIDs

`UUIDs.uuid1` — Function.

    uuid1([rng::AbstractRNG=GLOBAL_RNG]) -> UUID

Generates a version 1 (time-based) universally unique identifier (UUID), as specified by RFC 4122. Note that the Node ID is randomly generated (does not identify the host) according to section 4.5 of the RFC.

Examples

    julia> rng = MersenneTwister(1234);

    julia> uuid1(rng)
    UUID("cfc395e8-590f-11e8-1f13-43a2532b2fa8")

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`UUIDs.uuid4` — Function.

    uuid4([rng::AbstractRNG=GLOBAL_RNG]) -> UUID

Generates a version 4 (random or pseudo-random) universally unique identifier (UUID), as specified by RFC 4122.

Examples

    julia> rng = MersenneTwister(1234);

    julia> uuid4(rng)
    UUID("196f2941-2d58-45ba-9f13-43a2532b2fa8")

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`UUIDs.uuid5` — Function.

    uuid5(ns::UUID, name::String) -> UUID

Generates a version 5 (namespace and domain-based) universally unique identifier (UUID), as specified by RFC 4122.

Julia 1.1

This function requires at least Julia 1.1.

Examples

    julia> rng = MersenneTwister(1234);

    julia> u4 = uuid4(rng)
    UUID("196f2941-2d58-45ba-9f13-43a2532b2fa8")

    julia> u5 = uuid5(u4, "julia")
    UUID("b37756f8-b0c0-54cd-a466-19b3d25683bc")

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`UUIDs.uuid_version` — Function.

    uuid_version(u::UUID) -> Int

Inspects the given UUID and returns its version (see RFC 4122).

Examples

    julia> uuid_version(uuid4())
    4

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