whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. BigInt deactivationSlot,
    2. int lastExtendedSlot,
    3. int lastExtendedSlotStartIndex,
    4. Ed25519HDPublicKey? authority,
    5. List<Ed25519HDPublicKey> addresses,
    )?
)

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( BigInt deactivationSlot,  int lastExtendedSlot,  int lastExtendedSlotStartIndex,  Ed25519HDPublicKey? authority,  List<Ed25519HDPublicKey> addresses)?  $default,) {final _that = this;
switch (_that) {
case _AddressLookupTableState() when $default != null:
return $default(_that.deactivationSlot,_that.lastExtendedSlot,_that.lastExtendedSlotStartIndex,_that.authority,_that.addresses);case _:
  return null;

}
}