# 09 映射(Map)

- [声明和初始化映射](https://denglj.gitbook.io/essential-go/09-maps/declare-and-initialize-a-map.md)
- [创建映射](https://denglj.gitbook.io/essential-go/09-maps/create-a-map.md)
- [通过键获取值](https://denglj.gitbook.io/essential-go/09-maps/get-value-by-key.md)
- [获取映射大小(映射条目数)](https://denglj.gitbook.io/essential-go/09-maps/get-map-size-number-of-map-entries.md)
- [拷贝一个映射](https://denglj.gitbook.io/essential-go/09-maps/copy-a-map.md)
- [用range遍历映射](https://denglj.gitbook.io/essential-go/09-maps/iterate-a-map-with-range.md)
- [从映射中删除](https://denglj.gitbook.io/essential-go/09-maps/delete-from-a-map.md)
- [将映射(Map)用作集合(Set)](https://denglj.gitbook.io/essential-go/09-maps/use-map-as-a-set.md)
- [以切片为值的映射](https://denglj.gitbook.io/essential-go/09-maps/maps-with-slices-as-values.md)
- [并发访问映射](https://denglj.gitbook.io/essential-go/09-maps/concurrent-access-of-maps.md)
- [映射的零值](https://denglj.gitbook.io/essential-go/09-maps/zero-value-of-a-map.md)


---

# 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://denglj.gitbook.io/essential-go/09-maps.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.
