在ARC環境下,iOS不允許通過
obj.returnCount
的方式直接輸出引用計數。
使用如下代碼
LHSimpleObject * simpObject = [LHSimpleObject alloc];
NSLog(@"returnCount = %ld",CFGetRetainCount((__bridge CFTypeRef)(simpObject)));
simpObject = [simpObject init];
NSLog(@"returnCount = %ld",CFGetRetainCount((__bridge CFTypeRef)(simpObject)));
注意結尾處一共三個有括号
注意結尾處一共三個有括号
注意結尾處一共三個有括号
![](https://img.laitimes.com/img/9ZDMuAjOiMmIsIjOiQnIsICM38FdsYkRGZkRG9lcvx2bjxiNx8VZ6l2cs0TPn50MjpXT0cmeNBDOsJGcohVYsR2MMBjVtJWd0ckW65UbM5WOHJWa5kHT20ESjBjUIF2X0hXZ0xCMx81dvRWYoNHLrdEZwZ1Rh5WNXp1bwNjW1ZUba9VZwlHdssmch1mclRXY39CXldWYtlWPzNXZj9mcw1ycz9WL49zZuBnL1IjNzEDO0QTM4AzMwkTMwIzLc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)