when<TResult extends Object?> method
- @optionalTypeArgs
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 q, @FeedSearchPostsSortConverter() FeedSearchPostsSort? sort, String? since, String? until, String? mentions, String? author, String? lang, String? domain, String? url, List<String>? tag, int limit, String? cursor, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _FeedSearchPostsInput():
return $default(_that.q,_that.sort,_that.since,_that.until,_that.mentions,_that.author,_that.lang,_that.domain,_that.url,_that.tag,_that.limit,_that.cursor,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}