Playing with unsafe Pointers

UnsafePointerPlayground.swift

//: Playground - noun: a place where people can play

import Foundation

let arr = [1,5,7,8]

let pointer = UnsafeMutablePointer<[Int]>.alloc(4)
pointer.initialize(arr)

let x = pointer.memory[3]

println(x)

pointer.destroy()
pointer.dealloc(4)

class A {
  var x: String?
  
  convenience init (_ x: String) {
    self.init()
    self.x = x
  }
  
  func description() -> String {
    return x ?? ""
  }
}


let arr2 = [A("OK"), A("OK 2")]
let pointer2 = UnsafeMutablePointer<[A]>.alloc(2)
pointer2.initialize(arr2)

pointer2.memory
let y = pointer2.memory[1]

println(y)

pointer2.destroy()
pointer2.dealloc(2)