「ios」block块中使用self

【问题现象】

在block块中使用self时报警告：self strongly in this block is likely to lead to a retain cycle

【问题解决】

__block ViewController *blockSelf = self;
_block = ^{
[blockSelf->_items addObject:@"Hello!"];
};

原文：http://www.cnblogs.com/ftrako/p/7473098.html