Classes and objects

Create a class:

class TheClass
{
  var firstvar: Int

  //making the constructor
  //placed after properties
  init (firstvar: Int)
  {
    self.firstvar = firstvar
  }
  func getFirstVar()
 {
  return self.firstvar
 //self means this current class
 }

}

instantiating the class:

var theClass = TheClass(firstvar: 100)

calling a function in the class:

var fv = theClass.getFirstVar()