...供商？你可以参考Metamask官网的这篇文章[《What is Infura, and why does MetaMask use it?》](https://metamask.zendesk.com/hc/en-us/articles/4417315392795-What-is-Infura-and-why-does-MetaMask-use-it-)。市面上流行的服务提供商除了[Infura](https://infura.io/)，还有[Alchemy...
...e: T,
}
/// A generic struct with a type parameter that has the `copy` and `drop` abilities.
public struct CopyableDroppable {
value: T, // T must have the `copy` and `drop` abilities
}
```
Move `Compiler` 将强制要求类型参数`T`具有指定的功能。如果类型参数不具...
...ntSnapshot更新了双方的投票权重
```javascript
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
...