Swift--集合類型

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標籤:ping   bsp   pow   --   ble   nts   font   類型   預設值   

數組

1.建立一個數組

  var someInts = [Int]()空數組

  someInts = []清空

  var threeDoubles = Array(repeating: 0.0, count: 3)有預設值的數組

  var shoppingList: [String] = ["Eggs", "Milk"]

  var arra = arrb + arrc建立一個數組是另兩個數組的相加

2.array.count

3.array.isEmpty

4.加元素

  array.append("Flour")

  array += ["Baking Powder"]

5.插入

  array.insert("Maple Syrup", at: 0)

6.刪除

  let a = array.remove(at: 0)

7.遍曆

  for item in array {

      print(item)

  }

  for (index, value) in array.enumerated() {

      print("Item \(index + 1): \(value)")

  }

Swift--集合類型

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