Merge pull request #166 from IntrepidPursuits/pr/iterator

Fix iterator issue for A6 processors

Author: paulrolfe

Intrepid.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "Intrepid"
-  s.version       = "0.13.1"
+  s.version       = "0.13.2"
   s.summary       = "Swift Bag"
   s.description   = <<-DESC
                     Collection of extensions and utility classes by and for the developers at Intrepid Pursuits.

SwiftWisdom/Core/Foundation/Data/Data+Extensions.swift

@@ -142,17 +142,15 @@ extension Data {
 
 extension Data {
     public func ip_segmentIterator(start: Int = 0, chunkLength: Int) -> AnyIterator<Data> {
-        let segmentToWrite = ip_suffix(from: start)
-        var mutable = segmentToWrite
-        let range = 0..<chunkLength
+        var iteratedData = ip_suffix(from: start)
         return AnyIterator {
             let nextData: Data?
-            if let remaining = mutable, remaining.count >= chunkLength {
-                nextData = mutable?[ip_safely:range]
-                mutable?.removeSubrange(range)
-            } else if let remaining = mutable, remaining.count > 0 {
-                nextData = mutable
-                mutable?.count = 0
+            if let remaining = iteratedData, remaining.count >= chunkLength {
+                nextData = remaining.prefix(chunkLength)
+                iteratedData?.removeFirst(chunkLength)
+            } else if let remaining = iteratedData, remaining.count > 0 {
+                nextData = remaining
+                iteratedData?.removeAll()
             } else {
                 nextData = nil
             }