ยังไงเพื่อเพิ่มกุญแจค่าคู่ในพจนานุกรมในรี

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สร้างพจนานุกรมรี

var someDict:[String:Int] = ["One":1, "Two":2, "Three":3] // creates dictionary
var someVar = someDict["One"] // accesses the value of key "One"

print("The value of key = One is \(someVar)")
0
0

รีบพจนานุกรมไปเอากุญแจจาก valye

let dict: [Int: String] = [1: "one", 2: "two", 4: "four"]

if let key = dict.someKey(forValue: "two") { 
    print(key)
} // 2

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