2013年1月22日
Objective C Property Qualifiers
摘要： In addition to readwrite and readonly, you can specify whether a property is retainedand/or atomic.The default behavior for properties in ARC is strong; in MRR thedefault behavior is assign. Strong and retain are synonymous;“strong” emphasizes theobject relationship while “retain” places its emphasi 阅读全文
posted @ 2013-01-22 16:00 discretemath 阅读(174) 评论(0) 推荐(0)