whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String requestId,
    2. int timestamp,
    3. bool success,
    4. T data,
    5. ErrorResponse? error,
    )?
)

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( String requestId,  int timestamp,  bool success,  T data,  ErrorResponse? error)?  $default,) {final _that = this;
switch (_that) {
case _GenericResponse() when $default != null:
return $default(_that.requestId,_that.timestamp,_that.success,_that.data,_that.error);case _:
  return null;

}
}