when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. int? mark,
    2. Object? tcpFastOpen,
    3. TProxyMode? tproxy,
    4. bool? acceptProxyProtocol,
    5. XrayTargetStrategy? domainStrategy,
    6. String? dialerProxy,
    7. int? tcpKeepAliveInterval,
    8. int? tcpKeepAliveIdle,
    9. String? tcpCongestion,
    10. int? tcpWindowClamp,
    11. int? tcpMaxSeg,
    12. bool? penetrate,
    13. int? tcpUserTimeout,
    14. bool? v6only,
    15. @JsonKey.new(name: 'interface') String? interfaceName,
    16. bool? tcpMptcp,
    17. List<CustomSockoptConfig>? customSockopt,
    18. AddressPortStrategy? addressPortStrategy,
    19. HappyEyeballsConfig? happyEyeballs,
    20. List<String>? trustedXForwardedFor,
    )
)

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( int? mark,  Object? tcpFastOpen,  TProxyMode? tproxy,  bool? acceptProxyProtocol,  XrayTargetStrategy? domainStrategy,  String? dialerProxy,  int? tcpKeepAliveInterval,  int? tcpKeepAliveIdle,  String? tcpCongestion,  int? tcpWindowClamp,  int? tcpMaxSeg,  bool? penetrate,  int? tcpUserTimeout,  bool? v6only, @JsonKey(name: 'interface')  String? interfaceName,  bool? tcpMptcp,  List<CustomSockoptConfig>? customSockopt,  AddressPortStrategy? addressPortStrategy,  HappyEyeballsConfig? happyEyeballs,  List<String>? trustedXForwardedFor)  $default,) {final _that = this;
switch (_that) {
case _SocketConfig():
return $default(_that.mark,_that.tcpFastOpen,_that.tproxy,_that.acceptProxyProtocol,_that.domainStrategy,_that.dialerProxy,_that.tcpKeepAliveInterval,_that.tcpKeepAliveIdle,_that.tcpCongestion,_that.tcpWindowClamp,_that.tcpMaxSeg,_that.penetrate,_that.tcpUserTimeout,_that.v6only,_that.interfaceName,_that.tcpMptcp,_that.customSockopt,_that.addressPortStrategy,_that.happyEyeballs,_that.trustedXForwardedFor);case _:
  throw StateError('Unexpected subclass');

}
}