when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- String $type,
- int reportId,
- @UReportRefSubjectConverter() UReportRefSubject? subject,
- @ReportRefStatusConverter() ReportRefStatus? status,
- 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, int reportId, @UReportRefSubjectConverter() UReportRefSubject? subject, @ReportRefStatusConverter() ReportRefStatus? status, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _ReportRef():
return $default(_that.$type,_that.reportId,_that.subject,_that.status,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}