# 智能合约学习日记

**Published by:** [waha3](https://paragraph.com/@waha3/)
**Published on:** 2022-05-06
**URL:** https://paragraph.com/@waha3/7hwPaDGNNCsmEkaKoL4f

## Content

1. solidity学习 面向对象的语言 param 需要声明版本 contract 合约类 每个.sol文件中都要这样一个类 变量类型 unit 默认是一个无符号的256整型

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