when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? id,
    2. String brand,
    3. String? country,
    4. String? currency,
    5. int? expYear,
    6. int? expMonth,
    7. String? name,
    8. String? funding,
    9. String? last4,
    10. Address? address,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String? id,  String brand,  String? country,  String? currency,  int? expYear,  int? expMonth,  String? name,  String? funding,  String? last4,  Address? address)  $default,) {final _that = this;
switch (_that) {
case _CardData():
return $default(_that.id,_that.brand,_that.country,_that.currency,_that.expYear,_that.expMonth,_that.name,_that.funding,_that.last4,_that.address);case _:
  throw StateError('Unexpected subclass');

}
}