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

这些情况出现，排障是困难的。

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，可以为它排错。

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

所以你开始用 Xcode 9 进行排障，你会自动获取这一行为。

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

视控制器 UI 开发中起着重要作用，所以要把它包含到视 排障体验中去。

Xcode 9 also includes some advancements in our debugging and runtime analysis tools.

Xcode 9 还包括排除故障和运行刻分析工具上的更新。

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？

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。

So view controller's SpriteKit and SceneKit are now great additions to our visual debugging.

视控制器的 SpriteKit 和 SceneKit 现都被加入了视觉排障工作中，这棒。

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，构建间上获得了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.

过去几年中，排障体验中加入了运行刻清理工具，它帮助找出错误这方面获得了大成功。

We've added the top-requested tools and features to enable rapid debugging, analysis, and optimization of your GPU performance bottlenecks.

添加了呼声最高的工具和特性，包括快速排障、分析和对你的 GPU性能瓶颈的优化。