# 10. NSLog 遇到的问题

**作者**: [Lefe\_x](https://weibo.com/u/5953150140)

* 问题一：

有时候 Xcode 控制台突然打印不出信息了，按照下面的步骤操作一下即可解决：

```
View -> Debug Area -> Activate Console
```

* 问题二：

有时候打印网络请求的时候，发现打印的信息只显示了部分信息，这时候可以使用 `printf` 来打印。

```
#define LLog( s, ... ) printf("[ %s:(%d) ] %s :%s\n", [[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], __LINE__, __PRETTY_FUNCTION__, [[NSString stringWithFormat:(s), ##__VA_ARGS__] UTF8String])
```

使用时直接用 LLog 即可：

```
LLog(@"Hello world");
[ ViewController.m:(22) ] -[ViewController viewDidLoad] :Hello world
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://awesome-tips.gitbook.io/ios/qi-ta/content-9.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.