> For the complete documentation index, see [llms.txt](https://denglj.gitbook.io/essential-go/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://denglj.gitbook.io/essential-go/08-slices/tong-guo-yu-fen-pei-nei-cun-you-hua-qie-pian.md).

# 通过预分配内存优化切片