How to convert nsmutablearray to swift array in swift?

0 Answers  

---

Consider the following code: var defaults = NSUserDefaults.standardUserDefaults() var userPref = defaults.stringForKey("userPref")! printString(userPref) func printString(string: String) { println(string) } Where is the bug? What does this bug cause? What’s the proper way to fix it?

1 Answers  

---

How can you write a comment in swift?

0 Answers  

---

What do you do when you realize that your app is prone to crashing?

0 Answers  

---

Do swift classes inherit from nsobject?

0 Answers  

---

Is swift thread safe?

0 Answers  

---

What is the use of static keyword in swift?

0 Answers  

---

Why is swift important?

0 Answers  

---

How to add an element into an array?

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  

---

Is swift garbage collected?

0 Answers  

---

What is better swift or objective c?

0 Answers  

---