whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String $type,
    2. int id,
    3. UModEventViewEvent event,
    4. UModEventViewSubject subject,
    5. List<String> subjectBlobCids,
    6. String createdBy,
    7. DateTime createdAt,
    8. String? creatorHandle,
    9. String? subjectHandle,
    10. ModTool? modTool,
    11. Map<String, dynamic>? $unknown,
    )?
)

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 $type,  int id, @UModEventViewEventConverter()  UModEventViewEvent event, @UModEventViewSubjectConverter()  UModEventViewSubject subject,  List<String> subjectBlobCids,  String createdBy,  DateTime createdAt,  String? creatorHandle,  String? subjectHandle, @ModToolConverter()  ModTool? modTool,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _ModEventView() when $default != null:
return $default(_that.$type,_that.id,_that.event,_that.subject,_that.subjectBlobCids,_that.createdBy,_that.createdAt,_that.creatorHandle,_that.subjectHandle,_that.modTool,_that.$unknown);case _:
  return null;

}
}