Swift test

gistfile1.swift

import Foundation

func add(a: Int, b: Int) -> Int { return a + b }
func sub(a: Int, b: Int) -> Int { return a - b }

func calculate(a: Int, b: Int, fn: (Int, Int) -> Int) -> Int { return fn(a, b) }

let sumOfTwoNumbers = calculate(10, 20, add)
let subOfTwoNumbers = calculate(30, 28, sub)

println("10 + 20 = \(sumOfTwoNumbers)")
println("30 - 28 = \(subOfTwoNumbers)")


let people = ["ford", "zaphod", "arthur", "trillian"].map { $0.capitalizedString }
people.sort { $0 < $1 }

println(people)