我想設置一個NSInteger到indexPath.row * 2,但我得到一個錯誤: Incompatible integer to pointer conversation initializing 'NSInteger *' (aka 'long *') with an expression of type 'long' 這裏是我的代碼 NSInteger *titleToDelete =
我嘗試使用下面的代碼來生成隨機負NSInteger的, + (NSInteger)getNegativeRandomNumber {
uint32_t random = arc4random_uniform(2147483647); // where 2147483647 is the max 32-bit positive value returned by random functi