import "package:arcane_helper_utils/arcane_helper_utils.dart"; import "package:flutter/foundation.dart"; void main() { // DateTime final DateTime dateTime = DateTime(2019, 1, 1, 13, 45); debugPrint(dateTime.toIso8601String()); // 2019-01-01T13:45:00.0 debugPrint(dateTime.startOfHour.toIso8601String()); // 2019-01-01T13:00:00.0 final bool today = DateTime.now().isToday; final bool notToday = DateTime(2001, 12, 31).isToday; debugPrint("$today"); // true debugPrint("$notToday"); // false // Strings const String? nullString = null; const String emptyString = " "; const String nonEmptyString = "Hello World!"; debugPrint("${nullString.isNullOrEmpty}"); // true debugPrint("${emptyString.isNullOrEmpty}"); // true debugPrint("${nonEmptyString.isNullOrEmpty}"); // false const String text = "DartLang"; final List result = text.splitByLength(3); debugPrint("$result"); // ["Dar", "tLa", "ng"] const String lowercase = "hello"; final String capitalized = lowercase.capitalize; debugPrint(capitalized); // "Hello" }