Smart Contracts Programming Tutorials, Guides & Best Practices

• Description: A decentralized storage network built on top of IPFS.
• Key Features:
• Provides verifiable, decentralized storage with economic incentives.
• Allows users to rent out unused storage space.
• Integrates seamlessly with IPFS for decentralized file storage.
• Ideal for storing large datasets and DApp data.
• Website: Filecoin

• Description: A blockchain-based storage solution for permanent, low-cost data storage.
• Key Features:
• Stores data permanently with a one-time fee.
• Uses a unique consensus mechanism called Proof of Access.
• Integrates with Ethereum for storing DApp data, NFTs, and more.
• Scalable and reliable for long-term data storage.
• Website: Arweave

• Run the following command in your terminal:

     npx hardhat compile

Solidity supports single inheritance. Contracts can inherit from other contracts.

contract Base {
    uint public data;

    function setData(uint _data) public {
        data = _data;
    }
}

contract Derived is Base {
    function getData() public view returns (uint) {
        return data;
    }
}

Gas is a fundamental concept in the Ethereum blockchain, serving as the unit that measures the computational work required to execute operations in smart contracts. Every transaction or operation on Ethereum consumes gas, and users must pay for it with Ether (ETH). Understanding how gas works and optimizing your smart contracts to minimize gas consumption is crucial for developing cost-effective and efficient decentralized applications (DApps). This tutorial will guide you through the essentials of gas in Ethereum, strategies for gas optimization, and best practices for writing efficient smart contracts.

Gas is the measure of computational effort required to execute operations on the Ethereum network. Each operation, from simple arithmetic to complex smart contract execution, consumes a specific amount of gas. Users must pay for gas in Ether, which compensates miners for the resources required to process and validate transactions.

Steps to Deploy:

Now that you’ve built a basic DApp, you can explore more complex and real-world use cases. DApps can be used in various domains, including: