erg/doc/zh_CN/syntax/09_builtin_procs.md

# 内置程序

[![badge](https://img.shields.io/endpoint.svg?url=https%3A%2F%2Fgezf7g7pd5.execute-api.ap-northeast-1.amazonaws.com%2Fdefault%2Fsource_up_to_date%3Fowner%3Derg-lang%26repos%3Derg%26ref%3Dmain%26path%3Ddoc/EN/syntax/09_builtin_procs.md%26commit_hash%3D51de3c9d5a9074241f55c043b9951b384836b258)](https://gezf7g7pd5.execute-api.ap-northeast-1.amazonaws.com/default/source_up_to_date?owner=erg-lang&repos=erg&ref=main&path=doc/EN/syntax/09_builtin_procs.md&commit_hash=51de3c9d5a9074241f55c043b9951b384836b258)

## id！

返回对象的唯一标识号
尽管在纯 Erg 语义中，结构相同的对象之间没有区别，但实际上对象在内存中具有不同的位置
`id!` 返回一个代表这个位置的数字

```python
```

<p align='center'>
    <a href='./08_procedure.md'>上一页</a> | <a href='./10_array.md'>下一页</a>
</p>