Cryptocurrency & Social Media Have Married and This is What It Looks Like Social media is a multi-billion-dollar industry where the platforms profit from user-generated content. Cryptocurrencies have arrived to end the exploitation. Cryptosocial: How Cryptocurrencies Are Changing Social Media surveys the history of social media and cryptocurrencies to show how these two unrelated technologies had a chance meeting that is changing the world. If you're one of the millions of people growing tired of legacy social media and how they take advantage of their own users, this book will open your eyes to the alternatives offering greater happiness, more freedom, and better personal and financial security. Read this book and you'll learn: What cryptosocial is all about. Which platforms and protocols you should pay attention to. Why cryptosocial media is the best alternative for Facebook, Twitter, and Snapchat. How to start using cryptosocial media. What you need to participate in decentralized social media platforms. And how you can profit from your own content, gain more control over your identity, and maintain security over your online data and personal assets.

METAFONT, created by author Donald E. Knuth, is a computer language that allows you to produce professional quality typefaces using mathematical type design. "The METAFONTbook," a users guide and reference manual, enables readers with only minimal computer science or word processing experience to master the basic as well as the more advanced areas of METAFONT programming.

Readers will learn how to write a program for each letter or symbol of a typeface. Using METAFONT, it is possible to customize a type design that already exists, or even to create an entire alphabet from scratch. It is particularly easy to create logos or special symbols. Advanced users will enjoy the freedom and artistry that METAFONT allows in creating original typefaces.
HIGHLIGHTS

• Introduces concepts informally early in the text; in later chapters, these concepts are filled in with more detailed explanations.
• Program exercises are found throughout the text with answers in an appendix.
• Exercises and concepts of greater difficulty are marked with margin symbols. In this way, both beginning and experienced users of METAFONT can benefit.
• The book is a companion text to Knuth's "The TeXbook," since TeX can be used to typeset with fonts created using METAFONT.

"The METAFONTbook" is the third in a five-volume series on "Computers and Typesetting," all authored by Knuth.
0201134454B04062001

Build and extend flexible Drupal sites and applications with this up-to-date, expert guide to Drupal 9 module development Key Features Explore the essential Drupal 9 APIs for module development Learn how to implement data modeling, caching, architecture, and much more in your Drupal applications Discover what's new in the latest Drupal core releases Book DescriptionWith its latest release, Drupal 9, the popular open source CMS platform has been updated with new functionalities for building complex Drupal apps with ease. This third edition of the Drupal Module Development guide covers these new Drupal features, helping you to stay on top of code deprecations and the changing architecture with every release. The book starts by introducing you to the Drupal 9 architecture and its subsystems before showing you how to create your first module with basic functionality. You'll explore the Drupal logging and mailing systems, learn how to output data using the theme layer, and work with menus and links programmatically. Once you've understood the different kinds of data storage, this Drupal guide will demonstrate how to create custom entities and field types and leverage the Database API for lower-level database queries. You'll also learn how to introduce JavaScript into your module, work with various file systems, and ensure that your code works on multilingual sites. Finally, you'll work with Views, create automated tests for your functionality, and write secure code. By the end of the book, you'll have learned how to develop custom modules that can provide solutions to complex business problems, and who knows, maybe you'll even contribute to the Drupal community! What you will learn Develop custom Drupal 9 modules for your applications Master different Drupal 9 subsystems and APIs Model, store, manipulate, and process data for effective data management Display data and content in a clean and secure way using the theme system Test your business logic to prevent regression Stay ahead of the curve and write PHP code by implementing best practices Who this book is forIf you are a Drupal developer looking to learn Drupal 9 to write modules for your sites, this book is for you. Drupal site builders and PHP developers with basic object-oriented programming skills will also find this book helpful. Although not necessary, some Symfony experience will help with understanding concepts easily.

The shortcomings of modern cryptography and its weaknesses against computers that are becoming more powerful necessitate serious consideration of more robust security options. Quantum cryptography is sound, and its practical implementations are becoming more mature. Many applications can use quantum cryptography as a backbone, including key distribution, secure direct communications, large prime factorization, e-commerce, e-governance, quantum internet, and more. For this reason, quantum cryptography is gaining interest and importance among computer and security professionals. Quantum Cryptography and the Future of Cyber Security is an essential scholarly resource that provides the latest research and advancements in cryptography and cyber security through quantum applications. Highlighting a wide range of topics such as e-commerce, machine learning, and privacy, this book is ideal for security analysts, systems engineers, software security engineers, data scientists, vulnerability analysts, professionals, academicians, researchers, security professionals, policymakers, and students.