maybeWhen<TResult extends Object?> method

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult $default(String? number, int? expirationYear, int? expirationMonth, String? cvc,)?, { required TResult orElse(), })

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String? number,  int? expirationYear,  int? expirationMonth,  String? cvc)?  $default,{required TResult orElse(),}) {final _that = this;
switch (_that) {
case _CardDetailsConstructor() when $default != null:
return $default(_that.number,_that.expirationYear,_that.expirationMonth,_that.cvc);case _:
  return orElse();

}
}