import 'package:uuid/data.dart'; import 'package:uuid/uuid.dart'; import 'package:uuid/rng.dart'; void main() { var uuid = Uuid(); // Generate a v1 (time-based) id var v1 = uuid.v1(); // -> '6c84fb90-12c4-11e1-840d-7b25c5ee775a' var v1Exact = uuid.v1( config: V1Options( 0x1234, DateTime.utc(2011, 11, 01).millisecondsSinceEpoch, 5678, [0x01, 0x23, 0x45, 0x67, 0x89, 0xab], null)); // -> '710b962e-041c-11e1-9234-0123456789ab' // Generate a v4 (random) id var v4 = uuid.v4(); // -> '110ec58a-a0f2-4ac4-8393-c866d813b8d1' // Generate a v4 (crypto-random) id var v4Crypto = uuid.v4(config: V4Options(null, CryptoRNG())); // -> '110ec58a-a0f2-4ac4-8393-c866d813b8d1' // Generate a v5 (namespace-name-sha1-based) id var v5 = uuid.v5(Namespace.url.value, 'www.google.com'); // -> 'c74a196f-f19d-5ea9-bffd-a2742432fc9c' // Generate a v6 (time-based) id var v6 = uuid.v6(); // -> '1ebbc608-7459-6a20-bc85-0d10b6a52acd' var v6Exact = uuid.v6( config: V6Options( 0x1234, DateTime.utc(2011, 11, 01).millisecondsSinceEpoch, 5678, [0x01, 0x23, 0x45, 0x67, 0x89, 0xab], null)); // -> '1e1041c7-10b9-662e-9234-0123456789ab' // Generate a v7 (time-based) id var v7 = uuid.v7(); // -> 060ab53c-0bb2-7482-8000-ab029e8fa2ea var v7Exact = uuid.v7( config: V7Options( DateTime.utc(2011, 10, 9, 8, 7, 6, 543, 210).millisecondsSinceEpoch, [ 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0x01, 0x23, 0x45, 0x67 ])); // -> '04e91562-0884-7fea-9234-0123456789ab' // Generate a v8 (time-random) id var v8 = uuid.v8(); // -> '1e1041c7-10b9-662e-9234-0123456789ab' var v8Exact = uuid.v8( config: V8Options(DateTime.utc(2011, 10, 9, 8, 7, 6, 543, 210), [ 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0x01, 0x23, 0x45, 0x67 ])); // -> '1e1041c7-10b9-662e-9234-0123456789ab' print('v1 | $v1'); print('v1 exact | $v1Exact'); print('v4 | $v4'); print('v4 crypto | $v4Crypto'); print('v5 | $v5'); print('v6 | $v6'); print('v6 exact | $v6Exact'); print('v7 | $v7'); print('v7 exact | $v7Exact'); print('v8 | $v8'); print('v8 exact | $v8Exact'); }