When these situations occur, they are very difficult to debug.

在这些情况出现时，排障是很困难的。

Because, if we understood these programs, we could debug them when things go wrong.

因为，如果了解那些程序，当出现问题时，为它排错。

So when you start debugging with Xcode 9, you're going to get this behavior for free.

所在你开始用 Xcode 9 进行排障时，你会自获取这一行为。

View controllers play an important role in UI development, so we're going to incorporate them into the view debugging experience.

视图控制器在 UI 开发中起着重要作用，所要把它包含到视图 排障体验中去。

I could debug a system easier than carry a conversation.

对于来说 调试系统比跟人聊天容易得多。

Well, how can I go about debugging this or solving this?

那么，该如何调试或解决这个问题呢？

By pre-compiling the bridging header, we've seen up to about a 40% improvement in built times, particularly for debug builds.

通过预编码桥接头文件，在构建时间上获得了40% 的提升，特别是有关 调试的构建。

Over the last few years, we've added runtime sanitizers to our debugging experience, and they have been wildly successful at helping track down issues.

在过去几年中，排障体验中加入了运行时刻清理工具，它在帮助找出错误这方面获得了很大成功。