verify() (answer: Bool) {
  row = calc.value.make(7)
  copy = row
  copy.count = 8
  answer = row.count == 7 and copy.count == 8 and row.id == dever.id.fromText("雪") and calc.batch.mapValues([1, 2, 3]) == [2, 3, 4] and calc.batch.total([1, 2, 3]) == 9 and calc.batch.apply(adjust, 2) == 4 and calc.batch.apply(calc.value.adjust, 2) == 3
}

adjust(value: Int) (answer: Int) {
  answer = value * 2
}

failureEntry() (answer: Int) {
  answer = calc.batch.apply(calc.value.positive, -1)
}

dispatch(value: Int) (answer: Int) {
  answer = calc.batch.apply(adjust, value)
}

dispatchTotal(values: List<Int>) (answer: Int) {
  answer = sum(dispatch, values)
}

faultEntry() (answer: Int) {
  answer = calc.batch.apply(calc.value.adjust, 9223372036854775807)
}