Smart Contracts Programming Tutorials, Guides & Best Practices

Before you begin, make sure you have the following:

• Node.js and npm: Node.js is required to run the development environment, and npm is used to manage packages.
• Truffle or Hardhat: These are development frameworks for Ethereum. You can use either one, but for this tutorial, we will use Hardhat.
• MetaMask: A browser extension wallet to interact with your smart contract.
• OpenZeppelin Contracts: A library of secure smart contract components.

• Limit gas consumption by optimizing functions.

• Write unit tests for every contract function.

4. Use Efficient Data Structures

• Choose data structures that minimize gas consumption. For example, mappings are generally more gas-efficient than arrays for storing large datasets.
• Example: Use a mapping instead of an array for storing user balances.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract SimpleStorage {
    uint256 public storedData;

    function set(uint256 x) public {
        storedData = x;
    }

    function get() public view returns (uint256) {
        return storedData;
    }
}

Explanation: