Openzeppelin库第十一期：再叙ERC20发币

最新推荐文章于 2025-04-22 16:39:18 发布

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最新推荐文章于 2025-04-22 16:39:18 发布 · 721 阅读

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本文介绍如何利用Openzeppelin库编写ERC20代币合约，并通过Remix进行部署。还涉及MetaMask的连接以及在myetherwallet.com上进行转账测试。

编写ERC20合约
通过remix进行部署
连接到MetaMask上面
通过myetherwallet.com进行转账测试等操作

新建1-ERC20文件夹，打开终端，truffle init ，

pragma solidity ^0.4.0;
library SafeMath {

    /**
    * @dev Multiplies two numbers, throws on overflow.
    */
    function mul(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
        // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (_a == 0) {
            return 0;
        }

        c = _a * _b;
        assert(c / _a == _b);
        return c;
    }

    /**
    * @dev Integer division of two numbers, truncating the quotient.
    */
    function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
        // assert(_b > 0); // Solidity automatically throws wh