whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. PrepareResponseAvailableCompat routeResponse,
    2. List<TxnDetailsCompat> route,
    3. AmountCompat localRouteTotal,
    4. List<TransactionFeeCompat> bridge,
    5. AmountCompat localBridgeTotal,
    6. TxnDetailsCompat initial,
    7. AmountCompat localTotal,
    )?
)

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( PrepareResponseAvailableCompat routeResponse,  List<TxnDetailsCompat> route,  AmountCompat localRouteTotal,  List<TransactionFeeCompat> bridge,  AmountCompat localBridgeTotal,  TxnDetailsCompat initial,  AmountCompat localTotal)?  $default,) {final _that = this;
switch (_that) {
case _UiFieldsCompat() when $default != null:
return $default(_that.routeResponse,_that.route,_that.localRouteTotal,_that.bridge,_that.localBridgeTotal,_that.initial,_that.localTotal);case _:
  return null;

}
}