Dart

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.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final dt = CkDateTime();

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

  // Generate a ULID for the current UTC date/time.
  // (i.e. the current UTC UNIX-time)
  var utc = true;
  var ulid = dt.ulidGenerate(utc);
  print(ulid);

  // example result: 01GRGCH4J88RECEN4D4VK4F629

  // Generate a ULID using the local timezone's current time.
  utc = false;
  ulid = dt.ulidGenerate(utc);
  print(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.
  final dt2 = CkDateTime();
  utc = true;
  dt2.setFromUnixTime(utc, 1675609066);
  ulid = dt2.ulidGenerate(utc);
  print(ulid);

  // example result: 01GRH1AJGG3P5K04DJHN3QJCX3
}