whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. XrayNetworkList? allowedNetwork,
    2. XrayAddress? rewriteAddress,
    3. int? rewritePort,
    4. XrayAddress? address,
    5. int? port,
    6. Map<String, String>? portMap,
    7. @JsonKey.new(name: 'network') XrayNetworkList? network,
    8. bool? followRedirect,
    9. int? userLevel,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  TResult? Function(
          XrayNetworkList? allowedNetwork,
          XrayAddress? rewriteAddress,
          int? rewritePort,
          XrayAddress? address,
          int? port,
          Map<String, String>? portMap,
          @JsonKey(name: 'network') XrayNetworkList? network,
          bool? followRedirect,
          int? userLevel)?
      $default,
) {
  final _that = this;
  switch (_that) {
    case _DokodemoConfig() when $default != null:
      return $default(
          _that.allowedNetwork,
          _that.rewriteAddress,
          _that.rewritePort,
          _that.address,
          _that.port,
          _that.portMap,
          _that.network,
          _that.followRedirect,
          _that.userLevel);
    case _:
      return null;
  }
}