Simple swift array append not working

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我寻月下人不归
我寻月下人不归 2020-12-11 16:38

I know this is going to be super elementary, but I have this piece of code:

var labels: [String]?

func initVC(image: Images){
    self.image = image

    le         


        
3条回答
  •  自闭症患者
    2020-12-11 17:15

    Labels has never been initialised. Change

    var labels:[String]?
    

    to

    var labels:[String] = []
    

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