whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. XrayNetwork? network,
    2. XrayAddress? address,
    3. int? port,
    4. int? userLevel,
    5. List<DNSOutboundRuleConfig>? rules,
    6. String? nonIPQuery,
    7. List<int>? blockTypes,
    )?
)

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( XrayNetwork? network,  XrayAddress? address,  int? port,  int? userLevel,  List<DNSOutboundRuleConfig>? rules,  String? nonIPQuery,  List<int>? blockTypes)?  $default,) {final _that = this;
switch (_that) {
case _DNSOutboundConfig() when $default != null:
return $default(_that.network,_that.address,_that.port,_that.userLevel,_that.rules,_that.nonIPQuery,_that.blockTypes);case _:
  return null;

}
}