| 1. | In most cases , cyclical references will not be used in the first place , and even if they are , most times the memory leakage will be small you can easily construct artificial cases of dangerous behavior ; for example , add a
可以一直在后台运行，当切换到它的会话并运行转换时，我们希望它能够使用最新的程序逻辑。对于这个特定的简单示例，关闭和重新启动应用程序并不难，并不会带来特别的损害。 |
