Chris Dannen

This book teaches you how to use Solidity and the Ethereum project – second only to Bitcoin in market capitalization. Blockchain protocols are taking the world by storm, and the Ethereum project, with its Turing-complete scripting language Solidity, has rapidly become a front-runner. Technologists from all fields and skill levels are converging to learn blockchain development and the potential of powerful censor-proof "dapps" is drawing new non-programmers to the space. Unlike Bitcoin, Ethereum has its own scripting language called Solidity, and Solidity gets its syntax from JavaScript. Introducing Ethereum and Solidity presents the blockchain phenomenon in context; then it situates Ethereum in a world pioneered by Bitcoin. It explains why developers and non-developers alike should consider developing their skills in smart contract patterns and distributed application development. Finally, it reviews the fundamentals of JavaScript programming alongside its introduction to Solidity programming, so that people who are unfamiliar with JavaScript, or people with rusty skills, can follow along and get coding.Finally, you will deploy a dapp with a regular HTML interface that can be accessed on the Web. Every Solidity tutorial out there today has the same flaw: they are written for advanced JavaScript developers who want to transfer their skills to a blockchain environment that will feel familiar. This book is accessible to non-JavaScript developers as much as it is to JavaScript developers. It is a powerful gateway for creative technologists of all types, from concept to deployment./div What You’ll Learn How Ethereum (and other cryptocurrencies) work How distributed apps (dapps) are different than web apps How to write Ethereum smart contracts in Solidity language How to connect Ethereum smart contracts to your HTML/CSS/JavaScript web applications How to deploy your own dapp, coin, and blockchain How to work with basic and intermediate smart contracts Who This Book Is For Anyone who is curious about Ethereum will derive huge benefit from this book. It’s accessible to anyone who has some familiarity with computer science, including product managers, CTOs, computer science, self-taught hackers, and anyone else who wants to get up and running with Ethereum quickly -- but lacks a strong JavaScript or web app development background. Experienced JavaScript programmers can also skip the first few sections and get a powerful introduction to smart contract authorship, dapp development, and dapp deployment. By the end of this book they will have a deep understanding of how blockchains work, and will be able to deploy real censor-proof dapps in the wild. Experts will find the advanced sample projects in this book rewarding, too, simply because of the power of Solidity. This book contains exciting sample code that can move real world assets, which will appeal to academic and corporate programmers.

Introducing Ethereum and Solidity

Kedar Iyer

Learn how to take your existing knowledge of Ethereum and Solidity to the next level. Hone your development skills and become more familiar with the syntax of the Solidity language by working through well-tested, well-documented intermediate-level sample projects. You will begin by covering the basics of Ethereum, Solidity, and gaming theory. From there, you will move onto sample projects that use smart contract engineering to create fun casino-style games that you can deploy and test on your friends and colleagues with real ether. All games are provably fair and auditable, so that players know the house won’t always win! Ideal for any reader with exposure to Ethereum, the techniques this book teaches are applicable to game developers, software engineers, web developers, and cryptocurrency enthusiasts. What You'll Learn Use various features and best practices for smart contract programming in Ethereum and Solidity Develop and deploy games of chance, similar to the kind you’d find in a casino Create fun, easy projects with Ethereum lntegrate the Ethereum blockchain into games Who This Book Is For Entry-level programmers with some exposure to Ethereum; game developers, Blockchain and cryptocurrency enthusiasts looking to add Ethereum and Solidity development to their skill set; software engineers and Web developers

Intermediate Projects for Solidity Developers

Building Games with Ethereum Smart Contracts

Christopher White

Beginning iOS Apps with Facebook and Twitter APIs shows you how to add the power of social networking to your mobile apps on iPhone, iPad, and iPod touch. With this book as your guide, you can write apps that connect to Facebook and Twitter quickly, securely, and discreetly. Instead of starting from scratch, you will build on the vast resources, data storage capacity, and familiar features of these platforms which have become part of everyday life for hundreds of millions of users worldwide. Beginning iOS Apps with Facebook and Twitter APIs introduces you to the development tools, techniques, and design practices you will need to work with the APIs. It helps you decide whether to use Facebook, Twitter, or both, and explains the important issues of design, branding, and permissible use guidelines. You will learn how to guarantee privacy and use OAuth for authentication and single sign-on. Create news apps, shopping apps, contact apps, GPS apps, guides, and more, that let users transparently: Sign on once, then freely work with and manage their Facebook and Twitter accounts Publish game high scores, post likes, links, and status updates Send messages, share pictures, and forward Tweets Tweet a link to an event, show themselves as attending, and see who else is there Show Tweets that are relevant to a topic within a news app Show Tweets about a restaurant Organize a group or community From time to time, new forms of communication come along that make it easier for people to communicate and manage their social lives. Like phone calls and SMS before them, Facebook and Twitter have, in a short time, become essential parts of the social fabric of life for an ever-growing number of people throughout the world. The knowledge you'll gain from Beginning iOS Apps with Facebook and Twitter APIs will help you create exciting and popular iOS apps that your users will rely on every day to help make their lives more meaningful and connected.

Chris Dannen

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