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 $type, int id, @UModEventViewDetailEventConverter() UModEventViewDetailEvent event, @UModEventViewDetailSubjectConverter() UModEventViewDetailSubject subject, @BlobViewConverter() List<BlobView> subjectBlobs, String createdBy, DateTime createdAt, @ModToolConverter() ModTool? modTool, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _ModEventViewDetail():
return $default(_that.$type,_that.id,_that.event,_that.subject,_that.subjectBlobs,_that.createdBy,_that.createdAt,_that.modTool,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}