How you define variables in swift language?

0 Answers  

---

Mention what is the difference between Swift and ‘Objective-C’ language?

0 Answers  

---

What is encapsulation in swift?

0 Answers  

---

What is a swift protocol?

0 Answers  

---

What is an optional in swift?

0 Answers  

---

Why swift is faster?

0 Answers  

---

struct Planet { var name: String var distanceFromSun: Double } let planets = [ Planet(name: "Mercury", distanceFromSun: 0.387), Planet(name: "Venus", distanceFromSun: 0.722), Planet(name: "Earth", distanceFromSun: 1.0), Planet(name: "Mars", distanceFromSun: 1.52), Planet(name: "Jupiter", distanceFromSun: 5.20), Planet(name: "Saturn", distanceFromSun: 9.58), Planet(name: "Uranus", distanceFromSun: 19.2), Planet(name: "Neptune", distanceFromSun: 30.1) ] let result1 = planets.map { $0.name } let result2 = planets.reduce(0) { $0 + $1.distanceFromSun } What are the types and values of the result1 and result2 variables? Explain why.

1 Answers  

---

Who calls the main function of our app during the app launch cycle?

0 Answers  

---

Does swift have header files?

0 Answers  

---

How do you make a swift bridging header?

0 Answers  

---

The following code snippet results in a compile time error: struct IntStack { var items = [Int]() func add(x: Int) { items.append(x) // Compile time error here. } } Explain why a compile time error occurs. How can you fix it?

1 Answers  

---

What is lazy loading in ios swift?

0 Answers  

---