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(
XrayAddress address,
int port,
int? level,
String? email,
@JsonKey(name: 'method') String? cipher,
String password,
bool? uot,
int? uotVersion)
$default,
) {
final _that = this;
switch (_that) {
case _ShadowsocksServerTarget():
return $default(_that.address, _that.port, _that.level, _that.email,
_that.cipher, _that.password, _that.uot, _that.uotVersion);
case _:
throw StateError('Unexpected subclass');
}
}