playerken

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2014年11月12日 #

strong reference cycle in block
摘要： However, because the reference is weak, the object that self points to could be deallocated while theblock is executing.You can eliminate this risk by... 阅读全文
posted @ 2014-11-12 16:48 playerken 阅读(178) 评论(0) 推荐(0) 编辑