From 2fd2a104323dfc3718af0727d5f9bb7be7468c0a Mon Sep 17 00:00:00 2001
From: Matthias Neeracher <microtherion@gmail.com>
Date: Wed, 3 Dec 2014 16:41:39 +0100
Subject: [PATCH] Use hasPrefix

---
 AVRsack/ASSerial.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AVRsack/ASSerial.swift b/AVRsack/ASSerial.swift
index 392ebdc..ffd9d8a 100644
--- a/AVRsack/ASSerial.swift
+++ b/AVRsack/ASSerial.swift
@@ -13,7 +13,7 @@ class ASSerial {
         let devices = NSFileManager.defaultManager().contentsOfDirectoryAtPath("/dev", error: nil)!
         var cuDevs  = [String]()
         for dev in devices as [String] {
-            if dev.substringToIndex(dev.startIndex.successor().successor()) == "cu" {
+            if dev.hasPrefix("cu") {
                 cuDevs.append("/dev/"+dev)
             }
         }