Dicoding-Swift-4

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print("Day 4 of learning Swift") /* a != nil ? a! : b ketika nilai a sama dengan nil, maka akan mengembalikan nilai b ketika nilai a tidak sama dengan nil, maka nilai akan mengembalikan a kode dapat disederhanakan menjadi a ?? b*/ let defaultColor = "red" var userColor: String? // default is nil var colorNameUse = userColor ?? defaultColor // akan memberikan "red" pada variable let colorOne = "red" var colorTwo: String? colorTwo = "green" var colorToUse = colorTwo ?? colorOne // THE FOLLOWING: LATIHAN MENGHITUNG BALOK!
print("Selamat datang di glot.io, let's get started!") // setting default let width = 2.0 let height = 3.0 let length = 4.0 // counting process let volume = width * height * length let Area = 2 (width * height) + 2 * (width * length) + 2 * (length * height) let circumference = 4 * (width + length + height) print("=============================================================") // output dari data yang kita tuliskan di atas print("Anda mempunyai suatu balok dengan ukuran sbb:") print("Lebar: \(width) cm") print("Tinggi: \(height) cm") print("Panjang: \(length) cm") print("=============================================================") print("Dari ukuran di atas, kita bisa mencari supporting data sbb:") print("Volume: \(volume) cm^3") print("Area: \(Area) cm^2") print("Circumference: \(circumference) cm")
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