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Update readme.md
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AmazingAng committed Aug 27, 2022
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Expand Up @@ -70,7 +70,7 @@ keccak256("Transfer(addrses,address,uint256)")
```
除了事件签名,主题还可以包含至多`3``indexed`参数,也就是`Transfer`事件中的`from``to`

`indexed`标记的参数可以理解为检索事件的索引“键”,方便之后搜索。每个 `indexed` 参数的大小为固定的256比特,如果参数太大了(比如字符串),就会自动转换为它的哈希存储在主题中
`indexed`标记的参数可以理解为检索事件的索引“键”,方便之后搜索。每个 `indexed` 参数的大小为固定的256比特,如果参数太大了(比如字符串),就会自动计算哈希存储在主题中

### 数据 `Data`

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