# 【链上膜法】(二)存储插槽、读取private变量、delegatecall、可升级合约

**Published by:** [Derrick(⚚,⚚)](https://paragraph.com/@derrick-3/)
**Published on:** 2022-05-01
**URL:** https://paragraph.com/@derrick-3/private-delegatecall

## Content

2

## Publication Information

- [Derrick(⚚,⚚)](https://paragraph.com/@derrick-3/): Publication homepage
- [All Posts](https://paragraph.com/@derrick-3/): More posts from this publication
- [RSS Feed](https://api.paragraph.com/blogs/rss/@derrick-3): Subscribe to updates
- [Twitter](https://twitter.com/DerrickDotman): Follow on Twitter