when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. String feed,
    3. bool? hideReplies,
    4. bool hideRepliesByUnfollowed,
    5. int? hideRepliesByLikeCount,
    6. bool? hideReposts,
    7. bool? hideQuotePosts,
    8. 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 feed,  bool? hideReplies,  bool hideRepliesByUnfollowed,  int? hideRepliesByLikeCount,  bool? hideReposts,  bool? hideQuotePosts,  Map<String, dynamic>? $unknown)  $default,) {final _that = this;
switch (_that) {
case _FeedViewPref():
return $default(_that.$type,_that.feed,_that.hideReplies,_that.hideRepliesByUnfollowed,_that.hideRepliesByLikeCount,_that.hideReposts,_that.hideQuotePosts,_that.$unknown);case _:
  throw StateError('Unexpected subclass');

}
}