__weak typeof(self) weakSelf = self;
寫block里面的時(shí)候調(diào)用self的時(shí)候用這個(gè)
一般情況寫宏定義
#define ZZWeakSelf __weak typeof(self) weakSelf = self
防止如block的循環(huán)引用
__weak typeof(self) weakSelf = self;
寫block里面的時(shí)候調(diào)用self的時(shí)候用這個(gè)
#define ZZWeakSelf __weak typeof(self) weakSelf = self
防止如block的循環(huán)引用