Guess the new number1. 题目 1.1 要求： The number is now generated on-demand when a guess is made 1.2 题目代码： 1234567891011121314151617181920pragma solidity ^0.4.21;contract GuessTheNewNumberChallenge &#...

Guess the random number1. 题目 1.1 This time the number is generated based on a couple fairly random sources 1.2 题目代码： 1234567891011121314151617181920212223// SPDX-License-Identifier: MITpragma soli...

Here's something encrypted, password is required to continue reading.

web3_day01学习资源视频官方文档好文档1. Web3.js 的安装1.1 node.js 的下载安装及配置： 参考博客1.2 在 VSCode 中安装插件 ： code runner 2. 下载安装使用Ganache网上搜一下就有了，建议自己创建一个工作的空间，这样之前操作 的交易信息就会被保留下来。 3. 跟着视频敲代码3.1 视频中的代码：123let Web3 = requir...

Remix-debug的使用参考博客官方文档1官方文档21. 参考博客中获取的测试代码：1234567891011121314151617181920212223// SPDX-License-Identifier: MITpragma solidity ^0.8.4;contract Debugging { uint256 counter; constructor(u...

Guess the secret number1. 题目 1.1 Putting the answer in the code makes things a little too easy. This time I’ve only stored the hash of the number. Good luck reversing a cryptographic hash! 1.2 题目代...

Guess the number1. 题目 I’m thinking of a number. All you have to do is guess it. 题目代码： 12345678910111213141516171819202122// SPDX-License-Identifier: MITpragma solidity ^0.4.21;contract GuessTheNum...

Choose a nickname1. 题目 1.1 智能合约CaptureTheEther会记录每个玩家的昵称。要完成此挑战，请将您的昵称设置为非空字符串。智能合约在地址 的 Ropsten 测试网络上运行0x71c46Ed333C35e4E6c62D32dc7C8F00D125b4fee。 1.2 题目代码 123456789101112131415161718192021222324...

Call me1. 题目 1.1 部署以下合约 1.2 调用命名的函数callme 12345678910// SPDX-License-Identifier: MITpragma solidity ^0.4.21;contract CallMeChallenge { bool public isComplete = false; function callme() ...

Deploy a contracttips： 宝藏博客1. 题目要求 1.1 To complete this challenge, you need to: Install MetaMask. Switch to the Ropsten test network. Get some Ropsten ether. Clicking the “buy” button in MetaMask...