whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String id,
    2. String title,
    3. String? details,
    4. String? path,
    5. DateTime date,
    6. int? rating100,
    7. int oCounter,
    8. bool organized,
    9. bool interactive,
    10. double? resumeTime,
    11. int playCount,
    12. List<SceneFile> files,
    13. ScenePaths paths,
    14. String? studioId,
    15. String? studioName,
    16. String? studioImagePath,
    17. List<String> performerIds,
    18. List<String> performerNames,
    19. List<String?> performerImagePaths,
    20. List<String> tagIds,
    21. List<String> tagNames,
    )?
)

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 title,  String? details,  String? path,  DateTime date,  int? rating100, @JsonKey(name: 'o_counter')  int oCounter,  bool organized,  bool interactive, @JsonKey(name: 'resume_time')  double? resumeTime, @JsonKey(name: 'play_count')  int playCount,  List<SceneFile> files,  ScenePaths paths, @JsonKey(name: 'studio_id')  String? studioId, @JsonKey(name: 'studio_name')  String? studioName, @JsonKey(name: 'studio_image_path')  String? studioImagePath, @JsonKey(name: 'performer_ids')  List<String> performerIds, @JsonKey(name: 'performer_names')  List<String> performerNames, @JsonKey(name: 'performer_image_paths')  List<String?> performerImagePaths, @JsonKey(name: 'tag_ids')  List<String> tagIds, @JsonKey(name: 'tag_names')  List<String> tagNames)?  $default,) {final _that = this;
switch (_that) {
case _Scene() when $default != null:
return $default(_that.id,_that.title,_that.details,_that.path,_that.date,_that.rating100,_that.oCounter,_that.organized,_that.interactive,_that.resumeTime,_that.playCount,_that.files,_that.paths,_that.studioId,_that.studioName,_that.studioImagePath,_that.performerIds,_that.performerNames,_that.performerImagePaths,_that.tagIds,_that.tagNames);case _:
  return null;

}
}