IOS - Autorelease for CGMutablePathRef?

http://stackoverflow.com/questions/2819548/autorelease-for-cgmutablepathref

Autorelease pools exist in the Foundation layer and above (AppKit/UIKit, etc).

They don‘t exist for CoreFoundation/CoreGraphics objects.

原文：http://www.cnblogs.com/tx8899/p/3969303.html