欢迎读者互动交流。本报道著作权归属南方周末及相关权利方，未经许可禁止任何形式的转载，违者将承担法律责任。
Couple of things to note here: first of all, this doesn't actually compile. It's using the Boolean standard module so needs open util/boolean to function. Second, Boolean is the wrong approach here; you're supposed to use subtyping.
Show hidden characters
或许最重要的是，iPhone 17e的起售存储容量从128GB提升至256GB。在起售价保持599美元不变的前提下，这无疑是重大升级。用户还可选配512GB版本，价格将升至799美元。