Zig

Generate ULID

See more ULID/UUID Examples

Generate a ULID using a specified timestamp or the current system date timestamp.

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 dt = try chilkat.DateTime.init();
    defer dt.deinit();

    // Set dt to the current system date/time.
    dt.setFromCurrentSystemTime() catch {};

    // Generate a ULID for the current UTC date/time.
    // (i.e. the current UTC UNIX-time)
    var utc: bool = true;
    var ulid: [:0]const u8 = try dt.ulidGenerate(alloc, utc);
    std.debug.print("{s}\n", .{ulid});

    // example result: 01GRGCH4J88RECEN4D4VK4F629

    // Generate a ULID using the local timezone's current time.
    utc = false;
    ulid = try dt.ulidGenerate(alloc, utc);
    std.debug.print("{s}\n", .{ulid});

    // example result: 01GRH14AA82EY9A7S99YYF2QDY

    // -----------------------------------------------
    // To generate a ULID using a specific UNIX timestamp

    // For example, the Unix timestamp for Sun, 05 Feb 2023 14:57:46 GMT
    // is 1675609066

    // For more information about the Epoch Unix Timestamp, see Epoch Unix Timestamp

    // To generate a ULID from a specified date/time, set the CkDateTime and then generate the ULID.
    const dt2 = try chilkat.DateTime.init();
    defer dt2.deinit();
    utc = true;
    dt2.setFromUnixTime(utc, 1675609066) catch {};
    ulid = try dt2.ulidGenerate(alloc, utc);
    std.debug.print("{s}\n", .{ulid});

    // example result: 01GRH1AJGG3P5K04DJHN3QJCX3
}