如何通过数组和LT元素循环; UnsafeMutablePointer＆GT;在斯威夫特
我是新来的斯威夫特，通过MKMapPoints这是我从一个MKPolygon获得通过调用myPoly.points（）数组想循环。
然而，我被困在如何遍历指针的C数组的每个元素。
I am new to Swift and wanted to loop through an array of MKMapPoints which I get from an MKPolygon by calling myPoly.points(). However, I am stuck as to how to loop through every element of the C-Array of pointers.
for element in myPointsArray {}
不工作，我不知道如何确定这种斯威夫特数组的元素的数量。有任何想法吗？感谢您的帮助！
does not work and I don't know how determine the number of elements of this kind of array in Swift. Any ideas? Thanks for your help!
UnsafeBufferPointer presents不安全的指针和计数作为一个集合，所以你可以为..在过吧，下标是安全的，它传递给上工作的集合算法等：
UnsafeBufferPointer presents an unsafe pointer and a count as a collection so you can for..in over it, subscript it safely, pass it to algorithms that work on collections etc:
for point in UnsafeBufferPointer(start: poly.points(), count: poly.pointCount) {
println("\(point.x),\(point.y)")
}