Openzeppelin库第十一期：再叙ERC20发币

super_lixiang

于 2018-10-25 16:27:03 发布

阅读量699

点赞数

CC 4.0 BY-SA版权

分类专栏：区块链

本文链接：https://blog.youkuaiyun.com/super_lixiang/article/details/83380762

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。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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