when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- ServiceConfig? appview,
- ServiceConfig? pds,
- ServiceConfig? blobDivert,
- ServiceConfig? chat,
- ViewerConfig? viewer,
- String? verifierDid,
- 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(@ServiceConfigConverter() ServiceConfig? appview, @ServiceConfigConverter() ServiceConfig? pds, @ServiceConfigConverter() ServiceConfig? blobDivert, @ServiceConfigConverter() ServiceConfig? chat, @ViewerConfigConverter() ViewerConfig? viewer, String? verifierDid, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _ServerGetConfigOutput():
return $default(_that.appview,_that.pds,_that.blobDivert,_that.chat,_that.viewer,_that.verifierDid,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}