//Map
//Loops over a collection and applies the same operation to each element in the collection.

var numberArray = [1,2,3,4,5]

var newArray = numberArray.map( {(value:Int) -> Int in
  return value*2
})

//or quicker
var newArray = numberArray.map{$0*2}

//newArray = [2,4,6,8,10]