whenOrNull<TResult extends Object?> method
- @optionalTypeArgs
- TResult? notification(
- Notification data
A variant of when
that fallback to returning null
It is equivalent to doing:
switch (sealedClass) {
case Subclass(:final field):
return ...;
case _:
return null;
}
Implementation
@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>({TResult? Function( Notification data)? notification,}) {final _that = this;
switch (_that) {
case UModerationSubjectNotification() when notification != null:
return notification(_that.data);case _:
return null;
}
}