Asynchronous JavaScript is everywhere, whether you’re using Ajax, AngularJS, Node.js, or WebRTC. This practical guide shows intermediate to advanced JavaScript developers how Promises can help you manage asynchronous code effectively—including the inevitable flood of callbacks as your codebase grows. You’ll learn the inner workings of Promises and ways to avoid difficulties and missteps when using them. The ability to asynchronously fetch data and load scripts in the browser broadens the capabilities of JavaScript applications. But if you don’t understand how the async part works, you’ll wind up with unpredictable code that’s difficult to maintain. This book is ideal whether you’re new to Promises or want to expand your knowledge of this technology. Understand how async JavaScript works by delving into callbacks, the event loop, and threading Learn how Promises organize callbacks into discrete steps that are easier to read and maintain Examine scenarios you’ll encounter and techniques you can use when writing real-world applications Use features in the Bluebird library and jQuery to work with Promises Learn how the Promise API handles asynchronous errors Explore ECMAScript 6 language features that simplify Promise-related code

Why simple technological solutions to complex social issues continue to appeal to politicians and professionals who should (and often do) know better. Why do we keep trying to solve poverty with technology? What makes us feel that we need to learn to code--or else? In The Promise of Access, Daniel Greene argues that the problem of poverty became a problem of technology in order to manage the contradictions of a changing economy. Greene shows how the digital divide emerged as a policy problem and why simple technological solutions to complex social issues continue to appeal to politicians and professionals who should (and often do) know better.

Promises and agreements are everywhere; we make, receive, keep, and break them on a daily basis. The quest to understand these social practices is integral to understanding ourselves as social creatures. The study of promises and agreements is enjoying a renaissance in many areas of social philosophy, including philosophy of language, action theory, normative ethics, value theory, and legal philosophy. This volume is the first collection of philosophical papers on promises and agreements, bringing together sixteen original self-standing contributions to the philosophical literature. The contributors highlight some of the more interesting aspects of the ubiquitous social phenomena of promises and agreements from different philosophical perspectives.

Reflecting on the practice of disciple making in young adult, college, graduate, and local church contexts, Jonathan Dodson has discerned some common pitfalls. For many, discipleship is reduced to a form of religious performance before God. For others, it devolves into spiritual license and a loose adherence to spiritual facts. Both approaches distort biblical motivations for Christian obedience and are in need of reform. By explaining various motivations for discipleship, Dodson charts a biblically faithful, grace-driven alternative. Additionally, he provides a practical model for creating gospel-centered discipleship groups—small, reproducible, missional, gender-specific groups of believers that fight for faith together. This book blends both theology and practice to inspire and equip Christians to effectively fight sin, keep Jesus central, and make gospel-centered discipleship a way of life. Both new and growing Christians will learn to trust the gospel in community as they fight together for holiness as well as how to start gospel-centered community groups in any local church.

A white boy helps a black child escape slavery in the midst of the Civil War

Imagine a set of simple principles that could help you to understand how parts combine to become a whole, and how each part sees the whole from its own perspective. If such principles were any good, it shouldn’t matter whether we’re talking about humans on a team, birds in a flock, computers in a datacenter, or cogs in a Swiss watch. A theory of cooperation ought to be pretty universal, so we should be able to apply it both to technology and to the workplace. Such principles are the subject of Promise Theory, and the focus of this insightful book. The goal of Promise Theory is to reveal the behavior of a whole from the sum of its parts, taking the viewpoint of the parts rather than the whole. In other words, it is a bottom-up, constructionist view of the world. Start Thinking in Promises and find out why this discipline works for documenting system behaviors from the bottom-up.

Examines IBM's downfall in the early 1990s, arguing that failed leadership, strategic miscalculation, and disregard for customer and employee relationships were all to blame