whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String $type,
    2. @AtUriConverter.new() AtUri uri,
    3. String cid,
    4. @ProfileViewBasicConverter() ProfileViewBasic author,
    5. Map<String, dynamic> value,
    6. @LabelConverter() List<Label>? labels,
    7. int? replyCount,
    8. int? repostCount,
    9. int? likeCount,
    10. int? quoteCount,
    11. @UEmbedRecordViewRecordEmbedsConverter() List<UEmbedRecordViewRecordEmbeds>? embeds,
    12. DateTime indexedAt,
    13. 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, @AtUriConverter()  AtUri uri,  String cid, @ProfileViewBasicConverter()  ProfileViewBasic author,  Map<String, dynamic> value, @LabelConverter()  List<Label>? labels,  int? replyCount,  int? repostCount,  int? likeCount,  int? quoteCount, @UEmbedRecordViewRecordEmbedsConverter()  List<UEmbedRecordViewRecordEmbeds>? embeds,  DateTime indexedAt,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _EmbedRecordViewRecord() when $default != null:
return $default(_that.$type,_that.uri,_that.cid,_that.author,_that.value,_that.labels,_that.replyCount,_that.repostCount,_that.likeCount,_that.quoteCount,_that.embeds,_that.indexedAt,_that.$unknown);case _:
  return null;

}
}