Learning eBooks Page 11

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 retu...

Teaching and learning paradigms have attracted increased attention especially in the last decade. Immense developments of different ICT technologies and services have paved the way for alternative but effective approaches in educational processes.Many concepts of the agent technology, such as intelligence, autonomy and cooperation, have had a direct positive impact on many of the requests imposed on modern e-learning systems and educational processes.This book presents the state-of-the-art of e-learning and tutoring systems and discusses their capabilities and benefits that stem from integrating software agents.We hope that the presented work will be of a great use to our colleagues and researchers interested in the e-learning and agent technology....

Build scalable, efficient Rails web applications with Mongoid Overview A step-by-step guide that explains how to use Mongoid through lots of examples and code Monitor and fine-tune the performance of your application Work with the MongoDB aggregation framework In Detail Mongoid helps you to leverage the power of schema-less and efficient document-based design, dynamic queries, and atomic modifier operations. Mongoid eases the work of Ruby developers while they are working on complex frameworks. Starting with why and how you should use Mongoid, this book covers the various components of Mongoid. It then delves deeper into the detail of queries and relations, and you will learn some tips and tricks on improving performance. With this book, you will b...

A practical and fast-paced guide exploring Python design patterns Overview Explore the Model-View-Controller pattern and learn how to build a URL shortening service All design patterns use a real-world example that can be modified and applied in your software No unnecessary theory! The book consists of only the fundamental knowledge that you need to know In Detail Design pattern is a well-known approach to solve some specific problems which each software developer comes across during his work. Design patterns capture higher-level constructs that commonly appear in programs. If you know how to implement the design pattern in one language, typically you will be able to port and use it in another object-oriented programming language. The choice of imp...