when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- String $type,
- AtUri uri,
- String cid,
- ProfileView creator,
- LabelerPolicies policies,
- int? likeCount,
- LabelerViewerState? viewer,
- DateTime indexedAt,
- List<
Label> ? labels, - List<
ReasonType> ? reasonTypes, - List<
SubjectType> ? subjectTypes, - List<
String> ? subjectCollections, - 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, @AtUriConverter() AtUri uri, String cid, @ProfileViewConverter() ProfileView creator, @LabelerPoliciesConverter() LabelerPolicies policies, int? likeCount, @LabelerViewerStateConverter() LabelerViewerState? viewer, DateTime indexedAt, @LabelConverter() List<Label>? labels, @ReasonTypeConverter() List<ReasonType>? reasonTypes, @SubjectTypeConverter() List<SubjectType>? subjectTypes, List<String>? subjectCollections, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _LabelerViewDetailed():
return $default(_that.$type,_that.uri,_that.cid,_that.creator,_that.policies,_that.likeCount,_that.viewer,_that.indexedAt,_that.labels,_that.reasonTypes,_that.subjectTypes,_that.subjectCollections,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}