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有没有办法在未选择项目并且在pickerView开头按下完成按钮时释放项目的初始值?

  doneButton.rx.tap
  .withLatestFrom(
    Observable.merge(
      pickerView.rx.itemSelected.mapAt(\.row).map({ $0 + 1 }),
      ...
    )
  )
  .subscribe(onNext: 
      ...
4

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