This is a prototype UUIDv6 draft 03 implementation in Zig. It also includes versions 1 & 3-5 for comparison.

The library is contained entirely in src/Uuid.zig. Feel free to copy and customize or clone it as a submodule.

It targets Zig master and may not work on the latest release.

libOrExe.addPackagePath("uuid6", "path/to/uuid6-zig/src/Uuid.zig");

There are namespaces for the various UUID versions, v1, v3 - v7. Each has a create(...) method to create a single UUID, or a Source that can be used to create many with shared parameters and/or state.

Sources are not thread-safe and should be protected with a mutex.

const std = @import("std");
const Uuid = @import("uuid6");

pub fn main() anyerror!void {
    var rng = std.rand.DefaultPrng.init(0);
    const source = Uuid.v4.Source.init(&rng.random);

    var i: usize = 0;
    while (i < 10) : (i += 1) {
        const uuid = source.create();
        std.debug.print("{}\n", .{uuid});
    }
}

See also examples/bench.

The following tables were generated by hyperfine running examples/bench.

Note that the times are for 1e7 UUIDs, so for example each v4 takes ~12ns, and each v3 takes ~99ns.

Environment:

• OS: Windows 10
• CPU: AMD Ryzen 5 5600X
• Build mode: release-fast