flumpose 0.0.4

flumpose: ^0.0.4 copied to clipboard

extension StringExtensions on String {
  /// Returns true if the string is a valid email address.
  bool get isValidEmail {
    final emailRegex = RegExp(
      r'^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$',
    );
    return emailRegex.hasMatch(this);
  }

  /// Returns the string reversed.
  String get reversed => split('').reversed.join();
}

extension ListExtensions<T> on List<T> {
  /// Returns the second element of the list or null if it does not exist.
  T? get second => length > 1 ? this[1] : null;

  /// Returns a new list with the elements shuffled.
  List<T> shuffled() {
    final list = List<T>.from(this);
    list.shuffle();
    return list;
  }
}

extension DateTimeExtensions on DateTime {
  /// Returns true if the date is a weekend.
  bool get isWeekend => weekday == DateTime.saturday || weekday == DateTime.sunday;

  /// Returns the number of days until the next Monday.
  int get daysUntilNextMonday {
    final daysToAdd = (DateTime.monday - weekday) % 7;
    return daysToAdd == 0 ? 7 : daysToAdd;
  }
}

extension MapExtensions<K, V> on Map<K, V> {
  /// Returns a new map with all keys converted to strings.
  Map<String, V> get keysToStrings {
    return map((key, value) => MapEntry(key.toString(), value));
  }

  /// Returns a new map with values filtered by the given predicate.
  Map<K, V> filterValues(bool Function(V) predicate) {
    final filtered = <K, V>{};
    forEach((key, value) {
      if (predicate(value)) {
        filtered[key] = value;
      }
    });
    return filtered;
  }
}