toString method

@override String toString()

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  final listenerCount =
      _notifier.isDisposed ? 'null' : _notifier.countListeners();
  final hasErrorHandler = errorHandler != null;
  final hasCriticalErrorHandler = criticalErrorHandler != null;
  final hasLogger = logger != null;
  final loggerType = logger == _defaultLogger ? 'default' : 'custom';

  return '$runtimeType#$hashCode('
      'listeners: $listenerCount, '
      'defaultValue: ${_notifier.defaultValue}, '
      'errorHandler: ${hasErrorHandler ? 'set' : 'null'}, '
      'criticalErrorHandler: ${hasCriticalErrorHandler ? 'set' : 'null'}, '
      'logger: ${hasLogger ? loggerType : 'null'})';
}