when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. String topic,
    3. String displayName,
    4. String link,
    5. DateTime startedAt,
    6. int postCount,
    7. TrendViewStatus? status,
    8. String? category,
    9. List<ProfileViewBasic> actors,
    10. Map<String, dynamic>? $unknown,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String $type,  String topic,  String displayName,  String link,  DateTime startedAt,  int postCount, @TrendViewStatusConverter()  TrendViewStatus? status,  String? category, @ProfileViewBasicConverter()  List<ProfileViewBasic> actors,  Map<String, dynamic>? $unknown)  $default,) {final _that = this;
switch (_that) {
case _TrendView():
return $default(_that.$type,_that.topic,_that.displayName,_that.link,_that.startedAt,_that.postCount,_that.status,_that.category,_that.actors,_that.$unknown);case _:
  throw StateError('Unexpected subclass');

}
}