whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String id,
    2. String userId,
    3. String? topicId,
    4. String? sessionId,
    5. String? title,
    6. String content,
    7. List<String> tags,
    8. bool isPinned,
    9. DateTime createdAt,
    10. DateTime updatedAt,
    )?
)

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( String id,  String userId,  String? topicId,  String? sessionId,  String? title,  String content,  List<String> tags,  bool isPinned,  DateTime createdAt,  DateTime updatedAt)?  $default,) {final _that = this;
switch (_that) {
case _UserNoteModel() when $default != null:
return $default(_that.id,_that.userId,_that.topicId,_that.sessionId,_that.title,_that.content,_that.tags,_that.isPinned,_that.createdAt,_that.updatedAt);case _:
  return null;

}
}