Smart Contracts Programming Tutorials, Guides & Best Practices

• Description: The official documentation for the Ethereum blockchain, covering topics from basics to advanced development.
• Key Features:
• Comprehensive guides on setting up development environments.
• Tutorials on smart contract development and DApp creation.
• Detailed explanations of Ethereum concepts and protocols.
• Regularly updated with the latest information.
• Website: Ethereum Documentation

• Description: The official documentation for OpenZeppelin’s smart contract libraries and tools.
• Key Features:
• Guides on using OpenZeppelin Contracts, SDK, and Defender.
• Best practices for secure smart contract development.
• Tutorials on integrating OpenZeppelin tools with DApps.
• Regularly updated with the latest security features.
• Website: OpenZeppelin Documentation

     async function main() {
         const [deployer] = await ethers.getSigners();

         console.log("Deploying contracts with the account:", deployer.address);

         const MyToken = await ethers.getContractFactory("MyToken");
         const myToken = await MyToken.deploy("MyToken", "MTK", ethers.utils.parseUnits("1000000", 18));

         console.log("MyToken deployed to:", myToken.address);
     }

     main()
         .then(() => process.exit(0))
         .catch((error) => {
             console.error(error);
             process.exit(1);
         });

• getSigners: Retrieves the list of accounts provided by the Ethereum node, with the first account used as the deployer.
• getContractFactory: Gets the contract to deploy.
• deploy: Deploys the contract with the specified parameters (name, symbol, and initial supply).
• parseUnits: Converts the initial supply to the correct units, considering the token’s decimals.

• private: Accessible only within the contract

• external: Accessible only externally (cannot be called internally without this)

• Remix IDE: Provides real-time gas estimates while writing and testing smart contracts.
• Solidity Coverage: A tool for generating gas reports and identifying expensive operations in your code.
• ETH Gas Station: An online service that provides insights into gas prices and recommended gas limits for transactions.

Example Workflow:

Steps to Connect MetaMask:

After testing your DApp locally, the final step is to deploy it to a public Ethereum test network like Ropsten or Kovan.