when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- GeneratorView view,
- bool isOnline,
- bool isValid,
- 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(@GeneratorViewConverter() GeneratorView view, bool isOnline, bool isValid, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _FeedGetFeedGeneratorOutput():
return $default(_that.view,_that.isOnline,_that.isValid,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}