http://www.ios-blog.co.uk/tutorials/objective-c/objective-c-property-attribute-reference-guide/
http://kyfxbl.iteye.com/blog/1997514 其实本质上是解决public化(自动打getter/setter)...
http://www.ios-blog.co.uk/tutorials/objective-c/objective-c-property-attribute-reference-guide/
http://kyfxbl.iteye.com/blog/1997514 其实本质上是解决public化(自动打getter/setter)...