Book Image

Solidity Programming Essentials - Second Edition

By : Ritesh Modi
Book Image

Solidity Programming Essentials - Second Edition

By: Ritesh Modi

Overview of this book

Solidity is a high-level language for writing smart contracts, and the syntax has large similarities with JavaScript, thereby making it easier for developers to learn, design, compile, and deploy smart contracts on large blockchain ecosystems including Ethereum and Polygon among others. This book guides you in understanding Solidity programming from scratch. The book starts with step-by-step instructions for the installation of multiple tools and private blockchain, along with foundational concepts such as variables, data types, and programming constructs. You’ll then explore contracts based on an object-oriented paradigm, including the usage of constructors, interfaces, libraries, and abstract contracts. The following chapters help you get to grips with testing and debugging smart contracts. As you advance, you’ll learn about advanced concepts like assembly programming, advanced interfaces, usage of recovery, and error handling using try-catch blocks. You’ll also explore multiple design patterns for smart contracts alongside developing secure smart contracts, as well as gain a solid understanding of writing upgradable smart concepts and data modeling. Finally, you’ll discover how to create your own ERC20 and NFT tokens from scratch. By the end of this book, you will be able to write, deploy, and test smart contracts in Ethereum.
Table of Contents (21 chapters)
1
Part 1: The Fundamentals of Solidity and Ethereum
7
Part 2: Writing Robust Smart Contracts
13
Part 3: Advanced Smart Contracts

An introduction to Solidity and its advantages

Assembly programming in Solidity is low-level programming in which we can use opcodes and work with them directly. There are many advantages to using assembly language while writing contracts. The major advantages include the following:

  • Added capability: There are a few things that can only be done using assembly programming in Solidity. Some of these capabilities are not available in Solidity grammar itself – for example, determining whether an address is a contract address can be ascertained in assembly but not in Solidity. It should be noted that Solidity developers are trying to minimize this gap in the newer versions of the language.
  • Optimization of gas usage: We can optimize code by writing assembly code because it has fewer instructions compared to Solidity compiler-generated code.
  • Having full control: Writing assembly language directly gives us more control over generated bytecode compared to the compiler...