Smart Contracts Programming Tutorials, Guides & Best Practices

If you’ve deployed your contract to a public testnet or the mainnet, you might want to verify the contract on Etherscan.

   npm install --save-dev @nomiclabs/hardhat-etherscan

Before you start building your DApp, you’ll need to set up your development environment. Here’s what you need:

• Node.js: For running the development server and installing dependencies.
• Truffle Suite: A development framework for Ethereum smart contracts and DApps.
• Ganache: A personal Ethereum blockchain for testing smart contracts locally.
• MetaMask: A browser extension wallet for interacting with the Ethereum blockchain.

• pragma solidity ^0.8.0;: Specifies the version of Solidity.
• contract SimpleStorage: Defines a new smart contract named SimpleStorage.
• uint256 public storedData: Declares a public variable to store an unsigned integer.
• function set(uint256 x) public: A function to set the value of storedData.
• function get() public view returns (uint256): A function to retrieve the value of storedData.

After writing the smart contract, the next step is to deploy it on a test network to see it in action.