dart 时间戳

void main() {
  int currentTimeMillis = DateTime.now().millisecondsSinceEpoch;
  print('Current timestamp in milliseconds: $currentTimeMillis');
}

void main() {
  int timestamp = 1633075200000; // 假设这是一个时间戳
  DateTime dateTime = DateTime.fromMillisecondsSinceEpoch(timestamp);
  print('Date and time: $dateTime');
}

void main() {
  DateTime dateTime = DateTime(2021, 10, 1, 0, 0, 0);
  int timestamp = dateTime.millisecondsSinceEpoch;
  print('Timestamp in milliseconds: $timestamp');
}

void main() {
  DateTime utcDateTime = DateTime.utc(2021, 10, 1, 0, 0, 0);
  int utcTimestamp = utcDateTime.millisecondsSinceEpoch;
  print('UTC timestamp in milliseconds: $utcTimestamp');
  
  // 转换为本地时间
  DateTime localDateTime = DateTime.fromMillisecondsSinceEpoch(utcTimestamp, isUtc: false);
  print('Local date and time: $localDateTime');
}

void main() {
  DateTime dateTime = DateTime.now();
  int preciseTimestamp = dateTime.millisecondsSinceEpoch;
  print('Precise timestamp in milliseconds: $preciseTimestamp');
}