whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. int manufacturerId,
    2. int deviceTypeId,
    3. int batteryVoltage,
    4. String macAddress,
    5. DeviceState deviceState,
    6. bool hasValidServiceUuid,
    7. bool isConnectable,
    8. int flags,
    9. Map<int, List<int>> manufacturerData,
    )?
)

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( int manufacturerId,  int deviceTypeId,  int batteryVoltage,  String macAddress,  DeviceState deviceState,  bool hasValidServiceUuid,  bool isConnectable,  int flags,  Map<int, List<int>> manufacturerData)?  $default,) {final _that = this;
switch (_that) {
case _VtjAdvertisingData() when $default != null:
return $default(_that.manufacturerId,_that.deviceTypeId,_that.batteryVoltage,_that.macAddress,_that.deviceState,_that.hasValidServiceUuid,_that.isConnectable,_that.flags,_that.manufacturerData);case _:
  return null;

}
}