基于区块链的毕业设计🏗 scaffold-eth – 🏗 脚手架eth
本文提供基于区块链的毕业设计国外最新区块链项目源码下载，包括solidity,eth,fabric等blockchain区块链,基于区块链的毕业设计🏗 scaffold-eth – 🏗 脚手架eth 是一篇很好的国外资料
🏗 scaffold-eth
is everything you need to get started building decentralized applications powered by smart contracts
quickstart
git clone https://github.com/austintgriffith/scaffold-eth.git your-next-dapp cd your-next-dapp
yarn install
you might get node-gyp errors, ignore them and run:
yarn start
in a second terminal window:
yarn chain
in a third terminal window:
yarn deploy
YourContract.sol in packages/buidler/contracts
App.jsx in packages/react-app/src
With everything up your dev environment starts looking something like this:
React dev server, Buidler blockchain, deploy terminal, code IDE, and frontend browser.
yarn run deploy any time and get a fresh new contract in the frontend:
setPurpose on your contract and “write” to the purpose storage:
Look for the Buidler console.log() output in the yarn run chain terminal:
uint8 public count = 1;
function dec() public {} that does a count = count - 1;
localhost:
msg.sender and msg.value are cryptographically backed and can be used to make rules
block.timestamp or block.number to track time in our contract
address public owner; then make a rule like require( msg.sender == owner ); for an important function
mapping ( address => uint256 ) public balance;
function deposit() public payable {} and withdraw()
App.jsx in packages/react-app/src and learn about the
Ant Design has a bunch of great components.
useContractReader and useEventListener.
<Contract /> component that displays the dynamic form as scaffolding for interacting with your contract.
<Button/> that calls writeContracts.YourContract.setPurpose("👋 Hello World") to explore how your UI might work
YourStructName[] public proposals; that could call be voted on with function vote() public {}
receive() external payable {} so your contract will accept ETH?
defaultNetwork in packages/buidler/buidler.config.js
yarn run generate and view it with yarn run account
( You will probably want to take some of the
⏱ Quickstart: 🔬 Smart Contract Sandbox
Learn how to quickly iterate on a smart contract app using the <Contract /> component.
Join the telegram support chat
Tutorial 1: 🛠 Programming Decentralized Money
Learn the basics of
Tutorial 2: 🏵 The Token
Learn about tokens. [coming soon] What is a token? Why is it cool? How can I deploy one? Exotic mechanisms? (todo)
Tutorial 3: ⚖️ Minimum Viable Decentralized Exchange
Learn the basics of Automated Market Makers like
Tutorial 4: 🚀 Connecting ETH to IPFS
Build a simple IPFS application in
Tutorial 5: ⛽️ GSN and Meta Transactions
Learn about to provide your users with better UX by abstracting away gas fees and blockchain mechanics. (todo)
Tutorial 6: 🛰 Decentralized Deployment
Learn how to deploy your smart contract to a production blockchain. Then deploy your applicaton to Surge, S3, and IPFS. Finally, register an ENS and point it at the decentralized content!
built with 🏗 scaffold-eth:
👩🎨 Nifty Ink
Paintings come to life as you “ink” new creations and trade them on Ethereum. A deep dive into
🧙♂️ Instant Wallet
An instant wallet running on xDAI insired by xdai.io.
🗳 Personal Token Voting
Poll your holders! Build an example emoji voting system with
🌒 xmoon.exchange
Exchange Reddit MOONs for ETH or DAI through xDAI. Learn about different
Obituary.space
Remember someone permanently on the blockchain. Write an obituary and upload a photo of a person and their memory will be encoded on the blockchain, forever.
^^^
🧫 Building on Ethereum in 2020 (research)
⏱ Original Quickstart with TODO List:
First, you’ll need NodeJS>=10 plus Yarn and Git installed.
git clone https://github.com/austintgriffith/scaffold-eth.git rad-new-dapp cd rad-new-dapp git checkout quickstart yarn install
⌚️ This will take some time. How about a quick tour of the file structure with your favorite code editor?
💡 Sometimes the install throws errors like “node-gyp”, try the next step even if you see problems.
(You can also download the Apple command line tools to fix the warning.)
yarn start
App.jsx in packages/react-app/src and open http://localhost:3000
yarn run chain
Note: You’ll need to run this command in a new terminal window
🛠 Use this eth.build to double-check your local chain and account balances
yarn run compile
yarn run deploy
yarn run watch
SmartContractWallet.sol in packages/buidler/contracts
🤡 There is a spelling error inpackages/buidler/contracts/SmartContractWallet.sol!
🤔 Can you fix it and deploy the contract locally?
☢️ Warning: It is very important that you findSmartContractWallet.solinpackages/buidler/contractsbecause there are other contract folders and it can get confusing.
myTest.js in packages/buidler/contracts:
yarn run test
yarn run accounts
yarn run balance **YOUR-ADDRESS**
yarn run send --from 0 --amount 0.5 --to **YOUR-ADDRESS**
🔧 Configure👷 Buidler by editingbuidler.config.jsinpackages/buidler
🏃♂️ Speedrun (🎥 7 min):
🔬 Smart Contract Sandbox:
git clone https://github.com/austintgriffith/scaffold-eth.git smart-contract-sandbox cd smart-contract-sandbox yarn install
#run in original terminal window: yarn start #run in terminal window 2: yarn run chain #run in terminal window 3: yarn run deploy
YourContract.sol in packages/buidler/contracts
App.jsx in packages/react-app/src
yarn run chain and your contract is deployed with yarn run deploy
yarn run watch and as you change your Solidity, your frontend <Contract/> will hot reload to give you access to new variables and functions:
🔏 Web3 Providers:
The frontend has three different providers that provide different levels of access to different chains:
mainnetProvider: (read only) Infura connection to main Ethereum network (and contracts already deployed like DAI or Uniswap).
localProvider: local Buidler accounts, used to read from your contracts (.env file points you at testnet or mainnet)
injectedProvider: your personal MetaMask, WalletConnect via Argent, or other injected wallet (generates burner-provider on page load)
⛑ Helpers:
Transactor: The transactor returns a tx() function to make running and tracking transactions as simple and standardized as possible. We will bring in BlockNative’s Notify library to track our testnet and mainnet transactions.
const tx = Transactor(props.injectedProvider, props.gasPrice);
Then you can use the tx() function to send funds and write to your smart contracts:
tx({ to: readContracts[contractName].address, value: parseEther("0.001"), });
tx(writeContracts["SmartContractWallet"].updateOwner(newOwner));
☢️ Warning: You will need to update the configuration forreact-app/src/helpers/Transactor.jsto use your BlockNative dappId
🖇 Hooks:
Commonly used Ethereum hooks located in packages/react-app/src/:
usePoller(fn, delay): runs a function on app load and then on a custom interval
usePoller(() => { //do something cool at start and then every three seconds }, 3000);
useBalance(address, provider, [pollTime]): poll for the balance of an address from a provider
const localBalance = useBalance(address, localProvider);
useBlockNumber(provider,[pollTime]): get current block number from a provider
const blockNumber = useBlockNumber(props.provider);
useGasPrice([speed]): gets current “fast” price from ethgasstation
const gasPrice = useGasPrice();
useExchangePrice(mainnetProvider, [pollTime]): gets current price of Ethereum on the Uniswap exchange
const price = useExchangePrice(mainnetProvider);
useContractLoader(provider): loads your smart contract interface
const readContracts = useContractLoader(localProvider); const writeContracts = useContractLoader(injectedProvider);
useContractReader(contracts, contractName, variableName, [pollTime]): reads a variable from your contract and keeps it in the state
const title = useContractReader(props.readContracts, contractName, "title"); const owner = useContractReader(props.readContracts, contractName, "owner");
useEventListener(contracts, contractName, eventName, [provider], [startBlock]): listens for events from a smart contract and keeps them in the state
const ownerUpdates = useEventListener( readContracts, contractName, "UpdateOwner", props.localProvider, 1 );
📦 Components:
Your commonly used React Ethereum components located in packages/react-app/src/:
<Address />: A simple display for an Ethereum address that uses a Blockie, lets you copy, and links to Etherescan.
<Address value={address} /> <Address value={address} size="short" /> <Address value={address} size="long" blockexplorer="https://blockscout.com/poa/xdai/address/"/> <Address value={address} ensProvider={mainnetProvider}/>
<AddressInput />: An input box you control with useState for an Ethereum address that uses a Blockie and ENS lookup/display.
const [ address, setAddress ] = useState("") <AddressInput value={address} ensProvider={props.ensProvider} onChange={(address)=>{ setAddress(address) }} />
TODO GIF
<Balance />: Displays the balance of an address in either dollars or decimal.
<Balance address={address} provider={injectedProvider} dollarMultiplier={price} />
<Account />: Allows your users to start with an Ethereum address on page load but upgrade to a more secure, injected provider, using Web3Modal. It will track your address and localProvider in your app’s state:
const [address, setAddress] = useState(); const [injectedProvider, setInjectedProvider] = useState(); const price = useExchangePrice(mainnetProvider);
<Account address={address} setAddress={setAddress} localProvider={localProvider} injectedProvider={injectedProvider} setInjectedProvider={setInjectedProvider} dollarMultiplier={price} />
💡 Notice: the<Account />component will callsetAddressandsetInjectedProviderfor you.
☢️ Warning: You will need to update the configuration forWeb3Modalto use your Infura Id
<Provider />: You can choose to display the provider connection status to your users with:
<Provider name={"mainnet"} provider={mainnetProvider} /> <Provider name={"local"} provider={localProvider} /> <Provider name={"injected"} provider={injectedProvider} />
💡 Notice: you will need to check the network id of yourinjectedProvidercompared to yourlocalProviderormainnetProviderand alert your users if they are on the wrong network!
📄 Smart Contract Wallet:
SmartContractWallet.sol in packages/buidler/contracts
SmartContractWallet.js React component in packages/react-app/src
yarn run compile and yarn run deploy or just yarn run watch
🛠 Run this eth.build with your contract address to ask it who its owner is.
You can import any of the OpenZeppelin contracts:
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
📤 Save to your Git
Create a new repo with the same name as this project and then:
git remote add origin https://github.com/**YOUR_GITHUB_USERNAME**/**YOUR_COOL_PROJECT_NAME**.git git push -u origin master
🛳 Ship it!
You can deploy your static site and your dapp can go live:
yarn run build # ship it! yarn run surge OR yarn run s3 OR yarn run ipfs
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flip order of events
🏗 scaffold-eth
开始构建由智能合约支持的分散应用程序所需的一切都是
quickstart
git clone https://github.com/austintgriffith/scaffold-eth.git your-next-dapp cd your-next-dapp
yarn install
您可能会得到节点gyp错误，忽略它们并运行：
yarn start
在第二个终端窗口：
yarn chain
在第三个终端窗口：
yarn deploy
🔏 编辑智能合约你的合同.sol在包/制造商/合同中
📝 编辑前端应用程序jsx在软件包中/react app/src
📱 打开http://localhost：3000查看应用程序
📚 将solidity作为示例放在手边，查看solidity全局参数和单元
在您的开发环境中开始如下所示：
<>
React开发服务器、Builder区块链blockchain、部署终端、代码IDE和前端浏览器。
🔁 您可以随时运行部署并在前端获得新的合同：
💵. 每个浏览器的右上角都有一个帐户，您可以使用水龙头（左下角）获取⛽️气体测试网eth:
🔨 一旦你有了资金，你就可以在你的合同上调用setPurpose并“写”到目的存储器中：
<>
寻找构建者控制台.log（）纱线运行链终端的输出：
👨🏫 也许从super-simple开始，添加一个计数器uint8 public count=1；
⬇️ 然后是一个函数dec（）public{}，它执行count=count-1；
🔬 从0减去1会怎么样？在应用程序中试试看会发生什么！
🚽 下溢！
🧫 你可以边走边学。测试你的假设！
💵 在浏览器之间或甚至在instantwallet.io选择本地主机：
🔐 全局变量如消息发送者以及消息值有密码支持，可用于制定规则
📝 把这张备忘单放在手边
⏳ 也许我们可以利用块.时间戳或者区块编号跟踪合同中的时间
🔏 或者跟踪地址的公共所有者，然后制定一个规则，比如require（消息发送者==所有者）；对于重要功能
🧾 也许可以创建一个智能合约来跟踪映射（address=>；uint256）public balance；
🏦 它可以像一个分散的银行，您可以使用deposit（）public payment{}和draft（）
📟 事件对于向前端发出信号非常方便。在这里阅读更多关于事件的信息。
📲 花点时间在应用程序jsx在packages/react app/src中，了解🛰 提供商
🐜 UI框架Ant设计有很多很棒的组件。
📃 查看应用程序的控制台日志，查看useContractReader和useEventListener等钩子的额外输出。
🏗 您会注意到<；Contract/>；组件将动态表单显示为与合同交互的支架。
🔲 试着按一下按钮来呼叫writeContracts.YourContract.setPurpose(“👋 Hello World“）来探索用户界面的工作方式
🧬 下一步了解坚固结构。
🗳 可能是一个数组YourStructName[]public propositions；可以使用函数vote（）public{}对该调用进行投票
🔭 您的开发环境非常适合测试假设和通过原型学习。
📝 接下来了解回退功能
💸 也许添加一个receive（）external payment{}以便您的合同将接受ETH？
🚁 哦！编程分散资金！😎 太棒了！
🛰 准备好部署到测试网了吗？在packages/buidler中更改defaultNetwork/builder.config.js
🔐 使用yarn run Generate生成部署帐户，并使用yarn run account查看它
👩🎓 你可以从🏗 脚手架eth并开始使用👷 Buidler和📦 创建eth应用程序“独立”
（您可能需要🔗 钩子，🎛 来自的组件🏗 我们就这样开始了🖇 eth挂钩）
🚀 祝你好运！
⏱ Quickstart: 🔬 Smart Contract Sandbox
Learn how to quickly iterate on a smart contract app using the <Contract /> component.
Join the telegram support chat
了解如何使用<；contract/>；组件在智能合约应用程序上快速迭代。
加入telegram支持聊天💬 问问题，找其他人🏗 脚手架eth！
🎥. 注意长形🏗 在youtube上为欧洲经济区提供eth介绍。
Tutorial 1: 🛠 Programming Decentralized Money
了解令牌。什么是代币？为什么这么酷？如何部署？奇异的机制？（todo）
Learn the basics of
Tutorial 2: 🏵 The Token
Learn about tokens. [coming soon] What is a token? Why is it cool? How can I deploy one? Exotic mechanisms? (todo)
Tutorial 3: ⚖️ Minimum Viable Decentralized Exchange
学习自动化做市商的基本知识，如🦄 Uniswap。了解如何💰储备影响📉 价格，⚖️ 交易，以及💦 从低液体中滑落。
🏃♀️ 快跑📹
Tutorial 4: 🚀 Connecting ETH to IPFS
Build a simple IPFS application in
Tutorial 5: ⛽️ GSN and Meta Transactions
Learn about to provide your users with better UX by abstracting away gas fees and blockchain mechanics. (todo)
在中构建一个简单的IPFS应用程序🏗 scaffold eth以了解有关分布式文件存储和内容寻址的更多信息。🎥 Live Tutorial
Tutorial 6: 🛰 Decentralized Deployment
了解如何通过抽象汽油费和区块链blockchain机制为用户提供更好的用户体验。（todo）
Learn how to deploy your smart contract to a production blockchain. Then deploy your applicaton to Surge, S3, and IPFS. Finally, register an ENS and point it at the decentralized content!
built with 🏗 scaffold-eth:
👩🎨 Nifty Ink
Paintings come to life as you “ink” new creations and trade them on Ethereum. A deep dive into
了解如何将智能合约部署到生产区块链blockchain。然后将您的应用程序部署到Surge、S3和IPFS。最后，注册一个ENS并指向分散的内容！🎥 现场教程
🧙♂️ Instant Wallet
An instant wallet running on xDAI insired by xdai.io.
当您在以太坊eth上“墨水”新作品并将其交易时，绘画就变得栩栩如生。深入研究🖼 NFTs公司，🐳 外海，🖍 反应画布绘制，🎨 反应颜色，以及🛬 入职用户体验。
🗳 Personal Token Voting
🏃♂️ 快跑📹 （待办事项）
💾 源代码xdai.io公司.
💾 源代码！用🏗 脚手架eth。🔏 加密签名的投票，但通过📡 扎皮尔和📑 谷歌表格。
🏃♂️ 快跑📹
💾 通过
🌒 xmoon.exchange
🏃♂️ 快跑📹
💾 源代码
Obituary.space
永远记住区块链blockchain上的某人。写一篇讣告，上传一个人的照片，他们的记忆将永远被编码在区块链blockchain上。
^^^⛏ 公共关系🏗 脚手架eth项目在上面！！！^^^
🧫 Building on Ethereum in 2020 (research)
⏱ Original Quickstart with TODO List:
First, you’ll need NodeJS>=10 plus Yarn and Git installed.
git clone https://github.com/austintgriffith/scaffold-eth.git rad-new-dapp cd rad-new-dapp git checkout quickstart yarn install
首先，您需要安装NodeJS>；=10+纱线和Git。
💾 安装：
⌚️这需要一些时间。用你最喜欢的代码编辑器快速浏览一下文件结构如何？
yarn start
💡 有时安装会抛出“node gyp”之类的错误，即使看到问题也要尝试下一步。
（您也可以下载Apple命令行工具来修复该警告。）
🎛 前端
yarn run chain
📝 编辑前端应用程序jsx在packages/react app/src和open中http://localhost：3000
注意：您需要在新的终端窗口中运行此命令
yarn run compile
🛠 用这个以太币建造再次检查本地连锁店和账户余额
yarn run deploy
⚙️ 编制合同：
yarn run watch
🚢 将合同部署到前端：
🔍 观察更改，然后编译、部署和热重新加载前端：
🔥 你的dapp热重新加载你的智能合约和前端一起🔥
📝 编辑智能合约智能合约钱包.sol在包/制造商/合同中
🤡 包/编译程序/合同中存在拼写错误/智能合约钱包.sol!
在🤔 你能修复它并在本地部署合同吗？
yarn run test
☢️ 警告：你发现智能合约钱包.sol在packages/buidler/contracts中，因为还有其他合同文件夹，它可能会令人困惑。
yarn run accounts
🔬通过编辑测试你的合同我的测试.js在包/制造商/合同中：
yarn run balance **YOUR-ADDRESS**
🗝 列出您的本地帐户：
yarn run send --from 0 --amount 0.5 --to **YOUR-ADDRESS**
💰 支票账户余额：
💸 发送ETH:
🏃♂️ Speedrun (🎥 7 min):
🔧 配置👷编辑编译程序builder.config.js打包/内置
🔬 Smart Contract Sandbox:
✨ BuidlerEVM提供堆栈跟踪和控制台.log调试我们的合同✨
git clone https://github.com/austintgriffith/scaffold-eth.git smart-contract-sandbox cd smart-contract-sandbox yarn install
#run in original terminal window: yarn start #run in terminal window 2: yarn run chain #run in terminal window 3: yarn run deploy
💾 安装：
⚙️ 开始
🔏 编辑或重命名智能合约你的合同.sol在包/制造商/合同中
📝 编辑前端应用程序jsx在软件包中/react app/src
📱 打开http://localhost：3000查看应用程序
☢️ 确保您正在运行您的本地chain yarn run chain，并且您的合同是使用yarn run deploy部署的
🔥 试试yarn run watch，当你改变你的稳定性时，你的前端<；Contract/>；将热重新加载，让你可以访问新的变量和函数：
📽 视频指南
🔏 Web3 Providers:
📚 RTFM：通过示例检查solidity，并检查solidity全局参数和单位
🚀 祝你好运，去找他们！
前端有三个不同的提供商，它们提供对不同链的不同访问级别：
mainnetProvider:（只读）到以太坊eth主网络的Infura连接（以及像DAI或Uniswap一样部署的合同）。
localProvider：本地Buidler帐户，用于读取您的合同（.env文件指向testnet或mainnet）
⛑ Helpers:
injectedProvider：您的个人元掩码、WalletConnect via Argent或其他注入钱包（在页面加载时生成burner provider）
const tx = Transactor(props.injectedProvider, props.gasPrice);
🐜 蚂蚁设计是包含网格、菜单、日期、时间、按钮等组件的UI库
tx({ to: readContracts[contractName].address, value: parseEther("0.001"), });
tx(writeContracts["SmartContractWallet"].updateOwner(newOwner));
☢️ Warning: You will need to update the configuration forreact-app/src/helpers/Transactor.jsto use your BlockNative dappId
🖇 Hooks:
Commonly used Ethereum hooks located in packages/react-app/src/:
usePoller(fn, delay): runs a function on app load and then on a custom interval
usePoller(() => { //do something cool at start and then every three seconds }, 3000);
useBalance(address, provider, [pollTime]): poll for the balance of an address from a provider
const localBalance = useBalance(address, localProvider);
useBlockNumber(provider,[pollTime]): get current block number from a provider
const blockNumber = useBlockNumber(props.provider);
useGasPrice([speed]): gets current “fast” price from ethgasstation
const gasPrice = useGasPrice();
useExchangePrice(mainnetProvider, [pollTime]): gets current price of Ethereum on the Uniswap exchange
const price = useExchangePrice(mainnetProvider);
useContractLoader(provider): loads your smart contract interface
const readContracts = useContractLoader(localProvider); const writeContracts = useContractLoader(injectedProvider);
useContractReader(contracts, contractName, variableName, [pollTime]): reads a variable from your contract and keeps it in the state
const title = useContractReader(props.readContracts, contractName, "title"); const owner = useContractReader(props.readContracts, contractName, "owner");
useEventListener(contracts, contractName, eventName, [provider], [startBlock]): listens for events from a smart contract and keeps them in the state
const ownerUpdates = useEventListener( readContracts, contractName, "UpdateOwner", props.localProvider, 1 );
📦 Components:
Your commonly used React Ethereum components located in packages/react-app/src/:
<Address />: A simple display for an Ethereum address that uses a Blockie, lets you copy, and links to Etherescan.
<Address value={address} /> <Address value={address} size="short" /> <Address value={address} size="long" blockexplorer="https://blockscout.com/poa/xdai/address/"/> <Address value={address} ensProvider={mainnetProvider}/>
<AddressInput />: An input box you control with useState for an Ethereum address that uses a Blockie and ENS lookup/display.
const [ address, setAddress ] = useState("") <AddressInput value={address} ensProvider={props.ensProvider} onChange={(address)=>{ setAddress(address) }} />
TODO GIF
<Balance />: Displays the balance of an address in either dollars or decimal.
<Balance address={address} provider={injectedProvider} dollarMultiplier={price} />
<Account />: Allows your users to start with an Ethereum address on page load but upgrade to a more secure, injected provider, using Web3Modal. It will track your address and localProvider in your app’s state:
const [address, setAddress] = useState(); const [injectedProvider, setInjectedProvider] = useState(); const price = useExchangePrice(mainnetProvider);
<Account address={address} setAddress={setAddress} localProvider={localProvider} injectedProvider={injectedProvider} setInjectedProvider={setInjectedProvider} dollarMultiplier={price} />
💡 Notice: the<Account />component will callsetAddressandsetInjectedProviderfor you.
☢️ Warning: You will need to update the configuration forWeb3Modalto use your Infura Id
<Provider />: You can choose to display the provider connection status to your users with:
<Provider name={"mainnet"} provider={mainnetProvider} /> <Provider name={"local"} provider={localProvider} /> <Provider name={"injected"} provider={injectedProvider} />
💡 Notice: you will need to check the network id of yourinjectedProvidercompared to yourlocalProviderormainnetProviderand alert your users if they are on the wrong network!
📄 Smart Contract Wallet:
SmartContractWallet.sol in packages/buidler/contracts
SmartContractWallet.js React component in packages/react-app/src
yarn run compile and yarn run deploy or just yarn run watch
🛠 Run this eth.build with your contract address to ask it who its owner is.
You can import any of the OpenZeppelin contracts:
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
📤 Save to your Git
Create a new repo with the same name as this project and then:
git remote add origin https://github.com/**YOUR_GITHUB_USERNAME**/**YOUR_COOL_PROJECT_NAME**.git git push -u origin master
🛳 Ship it!
You can deploy your static site and your dapp can go live:
yarn run build # ship it! yarn run surge OR yarn run s3 OR yarn run ipfs
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部分转自网络，侵权联系删除区块链源码网
区块链知识分享网, 以太坊dapp资源网, 区块链教程, fabric教程下载, 区块链书籍下载, 区块链资料下载, 区块链视频教程下载, 区块链基础教程, 区块链入门教程, 区块链资源 » 基于区块链的毕业设计🏗 scaffold-eth – 🏗 脚手架eth
