New Releases by Nicholas H. Tollervey

It’s an exciting time to get involved with MicroPython, the re-implementation of Python 3 for microcontrollers and embedded systems. This practical guide delivers the knowledge you need to roll up your sleeves and create exceptional embedded projects with this lean and efficient programming language. If you’re familiar with Python as a programmer, educator, or maker, you’re ready to learn—and have fun along the way. Author Nicholas Tollervey takes you on a journey from first steps to advanced projects. You’ll explore the types of devices that run MicroPython, and examine how the language uses and interacts with hardware to process input, connect to the outside world, communicate wirelessly, make sounds and music, and drive robotics projects. Work with MicroPython on four typical devices: PyBoard, the micro:bit, Adafruit’s Circuit Playground Express, and ESP8266/ESP32 boards Explore a framework that helps you generate, evaluate, and evolve embedded projects that solve real problems Dive into practical MicroPython examples: visual feedback, input and sensing, GPIO, networking, sound and music, and robotics Learn how idiomatic MicroPython helps you express a lot with the minimum of resources Take the next step by getting involved with the Python community

Orchestrating asynchronous function calls in JavaScript often leads to callback hell, but there is a reliable way to avoid this painful state of affairs. With this concise and simple guide, you’ll learn how to use jQuery deferreds and promises, an elegant approach for managing asynchronous calls in both client and server applications. This book contains 18 examples that use deferreds to solve progressively challenging real-world programming problems, along with 75 stimulating puzzles (and their solutions) that will help you understand how and when to use deferreds. Experienced JavaScript programmers will learn new tricks in a fun way, and become immersed in the practice of event-based programming. Understand the logic behind creating deferreds and returning promises Get a structured explanation of jQuery’s deferred API Delve into the dynamics of using deferreds Explore a broad collection of useful deferred recipes developed by the authors Gain hands-on experience by solving challenges that accompany each recipe Go deeper into deferreds: encounter novel abstractions and mind-bending use cases

Imagine a public storage system that has a place online for structured data about everything that exists—or that could exist. This book introduces Fluidinfo, a system that enables you to store information about anything, real or imaginary, in any digital form. You’ll learn how to organize and search for data, and decide who can use, modify, and extend what you’ve contributed. This guide demonstrates Fluidinfo’s potential to create social data, with facilities that encourage users and applications to share, remix, and reuse data in ways they may not have anticipated. You’ll learn how to use tools for reading and writing data, and how to use Fluidinfo in your own applications by working with its writable API and simple query language. Read and write Fluidinfo data from web applications—and reuse and build upon each other’s data Discover Fluidinfo’s permissions system for tags and namespaces Learn how to use Fish, the command-line tool for interacting with Fluidinfo data Delve into Fluidinfo’s RESTful API, and learn how to make HTTP requests Use Fluidinfo client libraries to build a simple Python utility or a JavaScript web application