whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. dynamic raw_data,
    2. String raw_data_hex,
    3. List<String>? signature,
    4. String txID,
    5. bool? visible,
    )?
)

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( dynamic raw_data,  String raw_data_hex,  List<String>? signature,  String txID,  bool? visible)?  $default,) {final _that = this;
switch (_that) {
case _TronTransactionObject() when $default != null:
return $default(_that.raw_data,_that.raw_data_hex,_that.signature,_that.txID,_that.visible);case _:
  return null;

}
}