when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. XrayAddress address,
    2. XrayAddress? clientIp,
    3. int? port,
    4. bool? skipFallback,
    5. XrayStringList? domains,
    6. XrayStringList? expectedIPs,
    7. XrayStringList? expectIPs,
    8. DnsQueryStrategy? queryStrategy,
    9. String? tag,
    10. int? timeoutMs,
    11. bool? disableCache,
    12. bool? serveStale,
    13. int? serveExpiredTTL,
    14. bool? finalQuery,
    15. XrayStringList? unexpectedIPs,
    16. bool? simplified,
    )
)

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,  XrayAddress? clientIp,  int? port,  bool? skipFallback,  XrayStringList? domains,  XrayStringList? expectedIPs,  XrayStringList? expectIPs,  DnsQueryStrategy? queryStrategy,  String? tag,  int? timeoutMs,  bool? disableCache,  bool? serveStale,  int? serveExpiredTTL,  bool? finalQuery,  XrayStringList? unexpectedIPs,  bool? simplified)  $default,) {final _that = this;
switch (_that) {
case _NameServerConfig():
return $default(_that.address,_that.clientIp,_that.port,_that.skipFallback,_that.domains,_that.expectedIPs,_that.expectIPs,_that.queryStrategy,_that.tag,_that.timeoutMs,_that.disableCache,_that.serveStale,_that.serveExpiredTTL,_that.finalQuery,_that.unexpectedIPs,_that.simplified);case _:
  throw StateError('Unexpected subclass');

}
}