Swift 數組,字典

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數組的聲明

通過initailizer初始化,注意這裡的[Double]僅僅是Array<Double>的縮寫:

在數組中添加元素的兩種方式

添加元素

移除元素

移除元素的時候,後面的元素會自動向前移動填補gap

數組遍曆

除了普通的for in 迴圈遍曆,也可以用全域的enumerate函數來擷取遍曆中元素的序號

字典:

三種遍曆方式:

 

Swift 數組,字典

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