Book Image

Mastering Blockchain Programming with Solidity

By : Jitendra Chittoda
Book Image

Mastering Blockchain Programming with Solidity

By: Jitendra Chittoda

Overview of this book

Solidity is among the most popular and contract-oriented programming languages used for writing decentralized applications (DApps) on Ethereum blockchain. If you’re looking to perfect your skills in writing professional-grade smart contracts using Solidity, this book can help. You will get started with a detailed introduction to blockchain, smart contracts, and Ethereum, while also gaining useful insights into the Solidity programming language. A dedicated section will then take you through the different Ethereum Request for Comments (ERC) standards, including ERC-20, ERC-223, and ERC-721, and demonstrate how you can choose among these standards while writing smart contracts. As you approach later chapters, you will cover the different smart contracts available for use in libraries such as OpenZeppelin. You’ll also learn to use different open source tools to test, review and improve the quality of your code and make it production-ready. Toward the end of this book, you’ll get to grips with techniques such as adding security to smart contracts, and gain insights into various security considerations. By the end of this book, you will have the skills you need to write secure, production-ready smart contracts in Solidity from scratch for decentralized applications on Ethereum blockchain.
Table of Contents (21 chapters)
Free Chapter
1
Section 1: Getting Started with Blockchain, Ethereum, and Solidity
5
Section 2: Deep Dive into Development Tools
9
Section 3: Mastering ERC Standards and Libraries
16
Section 4: Design Patterns and Best Practices

Smart contracts best practices

In Solidity, there are many global variables and constructs available for developers to use. However, there are some limitations you must know about, otherwise, it could harm your contracts in production. 

If your contract has bugs or incorrect architecture, which allows an attacker to gain unauthorized control over your contracts, an attacker can steal funds from your contracts, or they can perform unintended operations on contracts, which, in turn, can harm you or your users economically. There have been many attacks in past that have allowed an attacker to gain full control over a contract and steal millions of dollars worth of ether. One such example is the Parity MultiSig wallet hack, in which more than 150,000 ETH was stolen in July 2017.

The Ethereum blockchain is slow in terms of transaction execution. This slowness also creates some...