whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String $type,
    2. SubjectType type,
    3. String subject,
    4. SubjectStatusView? status,
    5. RepoViewDetail? repo,
    6. USubjectViewProfile? profile,
    7. RecordViewDetail? record,
    8. 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, @SubjectTypeConverter()  SubjectType type,  String subject, @SubjectStatusViewConverter()  SubjectStatusView? status, @RepoViewDetailConverter()  RepoViewDetail? repo, @USubjectViewProfileConverter()  USubjectViewProfile? profile, @RecordViewDetailConverter()  RecordViewDetail? record,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _SubjectView() when $default != null:
return $default(_that.$type,_that.type,_that.subject,_that.status,_that.repo,_that.profile,_that.record,_that.$unknown);case _:
  return null;

}
}