whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String? email,
    2. int? level,
    3. String id,
    4. String? flow,
    5. String? seed,
    6. String? encryption,
    7. VLessReverseConfig? reverse,
    8. int? testpre,
    9. List<int>? testseed,
    )?
)

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? email,  int? level,  String id,  String? flow,  String? seed,  String? encryption,  VLessReverseConfig? reverse,  int? testpre,  List<int>? testseed)?  $default,) {final _that = this;
switch (_that) {
case _VLessUser() when $default != null:
return $default(_that.email,_that.level,_that.id,_that.flow,_that.seed,_that.encryption,_that.reverse,_that.testpre,_that.testseed);case _:
  return null;

}
}