...ngon...](https://medium.com/@francomangone18/cryptography-101-homomorphism-and-isomorphisms-65ba2610f90a)
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...licitly here. This is optional
// but useful for running the script in a standalone fashion through `node `.
//
// When running the script with `npx hardhat run ` you'll find the Hardhat
// Runtime Environment's members available in the global scope.
const hre = require("hardhat");
async function m...
... 操作员没有权限调用（除非经过approve）
// 触发 `Sent` and `Transfer`事件
function transferFrom(address holder, address recipient, uint256 amount) external returns (bool) {
require(recipient != address(0), "ERC777: transfer to the zero address");
requir...