Zig

Generate Monotonic ULIDs

See more ULID/UUID Examples

Generate a sequence of monotonic ULIDs all using the same seed time. This code sample generates a series of ULIDs with continuously increasing values.

Important: Chilkat's ULID functionality was introduced in v9.5.0.94.

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    const seed_dt = try chilkat.DateTime.init();
    defer seed_dt.deinit();

    // You can set the seed time to any desired value.
    // In this example, the seed time is set to the current system date/time.
    seed_dt.setFromCurrentSystemTime() catch {};

    // Generate the 1st ULID in the series.
    // (i.e. the current UTC UNIX-time)
    const utc = true;
    const ulid = try seed_dt.ulidGenerate(alloc, utc);
    std.debug.print("{s}\n", .{ulid});

    // Store the ULID in a Chilkat StringBuilder to generate the series.
    const sb_ulid = try chilkat.StringBuilder.init();
    defer sb_ulid.deinit();
    sb_ulid.append(ulid) catch {};

    var i: i32 = 0;
    while (i < 50) {
        seed_dt.ulidIncrement(sb_ulid) catch {};
        std.debug.print("{s}\n", .{try sb_ulid.getAsString(alloc)});
        i = i + 1;
    }

    // Sample output:

    // 01GRGH30H8DMQ4F9A0XCTZHPGM
    // 01GRGH30H8DMQ4F9A0XCTZHPGN
    // 01GRGH30H8DMQ4F9A0XCTZHPGP
    // 01GRGH30H8DMQ4F9A0XCTZHPGQ
    // 01GRGH30H8DMQ4F9A0XCTZHPGR
    // 01GRGH30H8DMQ4F9A0XCTZHPGS
    // 01GRGH30H8DMQ4F9A0XCTZHPGT
    // 01GRGH30H8DMQ4F9A0XCTZHPGV
    // 01GRGH30H8DMQ4F9A0XCTZHPGW
    // 01GRGH30H8DMQ4F9A0XCTZHPGX
    // 01GRGH30H8DMQ4F9A0XCTZHPGY
    // 01GRGH30H8DMQ4F9A0XCTZHPGZ
    // 01GRGH30H8DMQ4F9A0XCTZHPH0
    // 01GRGH30H8DMQ4F9A0XCTZHPH1
    // 01GRGH30H8DMQ4F9A0XCTZHPH2
    // 01GRGH30H8DMQ4F9A0XCTZHPH3
    // 01GRGH30H8DMQ4F9A0XCTZHPH4
    // 01GRGH30H8DMQ4F9A0XCTZHPH5
    // 01GRGH30H8DMQ4F9A0XCTZHPH6
    // 01GRGH30H8DMQ4F9A0XCTZHPH7
    // 01GRGH30H8DMQ4F9A0XCTZHPH8
    // 01GRGH30H8DMQ4F9A0XCTZHPH9
    // 01GRGH30H8DMQ4F9A0XCTZHPHA
    // 01GRGH30H8DMQ4F9A0XCTZHPHB
    // 01GRGH30H8DMQ4F9A0XCTZHPHC
    // 01GRGH30H8DMQ4F9A0XCTZHPHD
    // 01GRGH30H8DMQ4F9A0XCTZHPHE
    // 01GRGH30H8DMQ4F9A0XCTZHPHF
    // 01GRGH30H8DMQ4F9A0XCTZHPHG
    // 01GRGH30H8DMQ4F9A0XCTZHPHH
    // 01GRGH30H8DMQ4F9A0XCTZHPHJ
    // 01GRGH30H8DMQ4F9A0XCTZHPHK
    // 01GRGH30H8DMQ4F9A0XCTZHPHM
    // 01GRGH30H8DMQ4F9A0XCTZHPHN
    // 01GRGH30H8DMQ4F9A0XCTZHPHP
    // 01GRGH30H8DMQ4F9A0XCTZHPHQ
    // 01GRGH30H8DMQ4F9A0XCTZHPHR
    // 01GRGH30H8DMQ4F9A0XCTZHPHS
    // 01GRGH30H8DMQ4F9A0XCTZHPHT
    // 01GRGH30H8DMQ4F9A0XCTZHPHV
    // 01GRGH30H8DMQ4F9A0XCTZHPHW
    // 01GRGH30H8DMQ4F9A0XCTZHPHX
    // 01GRGH30H8DMQ4F9A0XCTZHPHY
    // 01GRGH30H8DMQ4F9A0XCTZHPHZ
    // 01GRGH30H8DMQ4F9A0XCTZHPJ0
    // 01GRGH30H8DMQ4F9A0XCTZHPJ1
    // 01GRGH30H8DMQ4F9A0XCTZHPJ2
    // 01GRGH30H8DMQ4F9A0XCTZHPJ3
    // 01GRGH30H8DMQ4F9A0XCTZHPJ4
    // 01GRGH30H8DMQ4F9A0XCTZHPJ5
    // 01GRGH30H8DMQ4F9A0XCTZHPJ6
}