2015年5月 Mac App上架需要使用ARC

Apple公告2015年5月所新开发的App或更新上架时,如有使用Garbage Collection必需要更新为ARC(Automatic Reference Counting),原文如下:

Beginning May 1, 2015, new Mac apps and app updates submitted to the Mac App Store may no longer use garbage collection, which was deprecated in OS X Mountain Lion. Instead, migrate your apps to Automatic Reference Counting, using the migration assistant in Xcode to help with this transition. Apps may continue to use retain/release for manual memory management.

如何由Garbage Collection升级为ARC参考Transitioning to ARC Release Notes