Smart Contracts Programming Tutorials, Guides & Best Practices

Different operations in a smart contract consume different amounts of gas. Simple operations like adding two numbers are inexpensive, while more complex operations like loops or external contract calls can be costly. It’s important to understand how various Solidity operations consume gas.

Examples of Gas Costs:

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

contract MessageStore {
    string public message;

    function setMessage(string memory newMessage) public {
        message = newMessage;
    }

    function getMessage() public view returns (string memory) {
        return message;
    }
}

Explanation:

Smart contracts are one of the most revolutionary aspects of blockchain technology, enabling decentralized, trustless applications that can execute automatically when certain conditions are met. Ethereum, being the most popular blockchain platform for developing smart contracts, provides a robust environment for creating these self-executing contracts. In this tutorial, we will walk through the basics of smart contracts, how to set up a development environment, write your first smart contract using Solidity, and deploy it on the Ethereum test network.

A smart contract is a self-executing contract with the terms of the agreement directly written into code. It runs on the Ethereum blockchain and automatically enforces the terms of the contract. Once deployed, it operates independently without the need for a central authority or intermediary, making transactions transparent, secure, and immutable.